What are all the members of a horse family called?

Answer 1

A group of horses that lives together and forages for food together is called a herd.

A baby horse of an unspecified gender is a foal.

A baby girl horse is a filly

A baby boy horse is a colt.

A sub-adult horse between the ages (depending on breed) of 1 year and 2 years is called a yearling.

A young female horse is still a filly until she is 4 years old (depending on breed).

A young boy horse can be is still colt until about the same age (depending on breed)

When horses are grown:

A grown girl horse is a mare or a dam (if she has a baby)

A grown boy horse who can't have babies is a gelding.

A grown boy horse who can have babies is a stallion, stud, or sire.

Herds are full of foals, fillies, colts, yearlings, and mares/dams. In the wild, there is one stallion/stud/sire per herd. Other grown male horses are not allowed.