As babies, we all had that favorite toy or blanket that comforted us whenever we felt the acute pangs or existence - or the torture of a full diaper.
Roger the Kangaroo has a toy, too - his is a pet rabbit, and he won't let anyone take it from him.
This sweet marsupial was rescued as a baby, after his mother was hit by a car. Rescuers found Roger clinging to life in his mother's pouch. Staff at the animal sanctuary were worried that he might get lonely after his recovery, so they gave him a toy rabbit.
Roger and the rabbit have been together ever since.
Have you ever seen two kangaroos fighting?