What are the young of an echidna called?

LargeWilderness, Not true. Certain species of sharks, velvet worms, scorpions and even cockroaches have live births.

Awwww, cutie pie alert !

A baby platypus is also called a pug gel.

To be characterized as a mammal: Mammals have hair or fur; are warm-blooded; most are born alive; the young are fed milk produced by the mother's mammary glands; and they have a more complex brain than other animals.