Meet Pip - she was abandoned by her mother and is now being cared for by her zoo keeper - who's using her rucksack as a pretend pouch for the wallaby!
Zoo keeper Alex is looking after the orphaned wallaby baby - called a joey - at Whipsnade Zoo in Bedfordshire.
Alex keeps Pip with her at all times during the day, just as her real mum might do. She also has to make sure she is fed around every four hours.
Alex says: "She is adorable but exhausting! Luckily she is starting to sleep through at night now and is very good at taking her bottle!"
The seven-month-old joey will be looked after by Alex for the next few months. After that, she'll live on the zoo's children's farm.
Pip is a type of wallaby - small kangaroos that come from Australia. They have large ears that swivel sideways and feed on grasses, leaves and herbs.