Ujian the whistling male orangutan whistles in his enclosure in the zoo in Heidelberg, Germany. His whistling will be heard on the record 'I am Ujian' that will be available at the zoo in June


An orangutan looks at a picture it had just painted at the zoo in Heidelberg, Germany. Paintings by the orangutans will be auctioned for the benefit of the zoo's monkey house


Six five-month-old orangutan babies play at the Indonesian Safari Park hospital in Pasuruan, East Java


Two young chimpanzees play At Nanjing Zoo, China


A zookeeper feeds a newborn white-eared night heron at a zoo in Nanning, Guangxi Zhuang Autonomous Region


A flamingo rests during a rain shower in its enclosure at the zoo in the northern German city of Osnabrueck


Peacocks are displayed for sale on a street in Kabul


A six month old southern white rhinoceros calf named Lisimba walks with his mother Lulu at Budapest Zoo and Botanical Gardens


An ocelot looks at a mouse at a reception centre for wild animals in Bogota


A tiger cools off at its enclosure at the zoo in Ahmadabad, India


A panther reacts in its enclosure at the zoo in Ahmadabad, India


Two day-old Bengal tiger cubs drink milk from their mother at a pen in Safari Park in Lahore, Pakistan


Moxie, a young lion cub and her mother, Sukari, at the Bronx Zoo in New York
Picture: AP

A nine day old female Rothschild giraffe stands next to her mother Mar in their enclosure at the Knies Kinderzoo in Rapperswil, Switzerland


Two day old male Rothschild giraffe Hermes stands next to his mother Luana in their enclosure at the Knies Kinderzoo in Rapperswil


A panda plays at Chengdu Graint Panda Breeding and Research Base in Sichuan Province, China


Polar bear Wilbaer frolics around in its enclosure at Wilhelma zoo in Stuttgart, Germany


A panda cub plays at the Giant Panda Breeding Centre in Chengdu


A panda cub plays at the Giant Panda Breeding Centre in Chengdu


An eleven-year-old boy named Christian holds five young sheep quintuplets on a meadow near Dahlburg, Germany


Chenwei Hsieh and his dog Juicy go for a bike ride along Richmond Street in London, Ontario, Canada

Animal pictures of the week: 8 May 2009 - Telegraph