Babies

A baby is a very young person. Babies are small and helpless, and can't walk or talk. When babies get a little bit older, they move around by crawling on their hands and knees.

A baby dolphin is called a calf.

A baby llama is called a cria.

A cygnet is a baby swan.

A fawn is a baby deer.

A foal is a baby horse.

Hatchling means a young animal that has just hatched from an egg. People use the word for baby birds, turtles, and other egg-laying animals.

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.