Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ?Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lion (Benmo) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ?Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lion (Benmo) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ?Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lion (Benmo) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ??Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Asiatic Lionesses Celebrates World Lion Day At London Zoo. Asiatic lionesses (Heidi, Indi and Rubi) playing with boomer balls at ZSL London Zoo ahead of World Lion Day on Friday, 10 August 2018. World Lion Day is celebrated around the world to raise awareness of the king of the jungle. Picture by Dinendra Haria / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. Members of the press seen during the photo call at ZSL London Zoo. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. Members of the press seen during the photo call at ZSL London Zoo. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images

Image ©Licensed to i-Images Picture Agency. 09/08/2018. London, United Kingdom. Lions at ZSL London Zoo. Photo call at London Zoo to celebrate the tomorrow´s World Lion Day. Lions transport box seen at ZSL London Zoo. London Zoo's lionesses, sisters Heidi, Indi, Rubi and male Benmo, mark together the Lion Day by playing with specially designed Boomer balls. Picture by Gustavo Valiente / i-Images