Baby koalas are called Joeys.

Baby koalas are called Joeys. All marsupial babies are called joeys – kangaroos, wallabies, wombats, tasmanian devils, possums & bilbys.

Koalas invented pro-biotics.

Koala joeys are born out of their mother’s central vagina.
Female koalas have three vaginas.

https://australianwildlifejourneys.com/blog/2016/11/24/1/five-amazing-facts-about-koala-joeys