It has to be, because the joey inside is not your average baby. An adult male red kangaroo can stand over 1 1/2 meters tall and weigh 90 kilograms. That's larger than a grown man. But the newborns ...

The new joey is the fifth born as part of the zoo’s conservation program and the first female to be born at Perth Zoo. The Goodfellow’s tree-kangaroo is classed as Endangered on the IUCN Red List.