London Zoo has been urged to review its events programme after concerns were raised about their impact on animal welfare.
Weighing in at at a tiny 37 grams when hatched, the first of the young crocodiles emerged from its egg in June.
London Zoo has had a surprise new addition in the form of their first ever baby sloth -but keepers didn't even know the parents had mated.
The first tiger cub to be born at London Zoo for 17 years has died. The cub was discovered on the edge of the pool inside the tigers' enclosure. Five-year-old Sumatran tiger Melati gave birth to the cub two weeks ago, with the event captured on hidden cameras in the den.
Keepers at London Zoo raised the alarm in the early hours of Saturday morning after they noticed that they could not see the cub on the den cameras. The zoo spokeswoman said a post-mortem examination carried out on Sunday confirmed the cub had drowned
London Zoo have welcomed their first tiger cub in seventeen years, after five year old Sumatran tiger Melati gave birth to a cub on Sunday evening.
The cub was born in the Zoo's "Tiger Territory" after a six-minute labour.
Zookeeper Paul Kybett said everyone at the zoo was "over the moon" about the birth.
"It's still very early days, so we're leaving Melati to take care of her adorable baby, and our cameras allow us to watch them both from a distance. So far she's proving to be a doting mum," he said.
Hundreds of tiny endangered tree-snails will be reintroduced to their former Polynesian home following the incredible success of an international breeding programme led by ZSL London Zoo.
Three species of Partula snail, Partula affinis, Partula nodosa, and Partula hyalina, which were bred at ZSL London Zoo and other partner zoos around the world, will be released on to the island of Tahiti in October after a nearly 30 year absence.
ZSL London Zoo invertebrate keeper and coordinator of the international Partula studbook, Don McFarlane, along with staff from Bristol and Edinburgh Zoos, will be escorting the precious cargo of snails to Tahiti, where they will be released into a protected reserve in their native forest habitat.
A stunning shot of a turtle gliding through the sea and the breathtaking image of an ant carrying a leaf ten times its size.
That's just two of the mesmerising pictures entered into the ZSL Animal Photography Prize now showing at London Zoo.
The competition is held every year to inspire amateur and professional photographers to get out and capture the magic of the natural world.
This wriggling Waxmonkey frog was among the species weighed at London Zoo today. He was 40g - a tenth of the size of the African Bullfrog.
Measuring Sumatran tiger Jae Jae was particularly trying for staff at London Zoo. They coaxed her to standing height with meat - managing to get a very brief measurement on their huge ruler. She came out at 6ft 6inches in her annual check-up.
How much does a camel weigh? And how do you get one onto the scales to find out? Here's a demonstration from the keepers at London Zoo, who are weighing all the animals as part of an annual survey.
Ghengis weighed 500g and Noemie 625kg. Keepers said both had lost weight after shedding their winter coats.