Babies

A baby goose is called a gosling.

A baby goat is called a kid.

A kitten is a baby cat.

Some insects go through stages in their life, and the early stage is the larval stage. Larvae of creatures like butterflies tend to be crawling things with no wings that spend all their time eating and growing. When they are big enough, they change into flying insects. Many different creatures have a larval stage that is so different to the adult form that you would never know they were the same creature unless you saw it change.

Baby seals, dogs, wolves and babies of some kinds of rodent are called pups. When you are talking about pups of a domestic dog, you usually call them puppies.