Kinds of "Hands"

A hand is the at the end of the front legs in mammals. Yes, we usually call this a "foot". But, here are differences between front and back limbs, so "hand" is more helpful. For most animals, the hands are used for moving from place to place.

The human hand consists of the wrist, palm, four fingers, and thumb. In humans and other primates, the thumb is opposable. This means the thumb can be put opposite from the other fingers.  Opposable thumbs are important to picking up small objects. The human hand has 27 bones. The wrist has eight short bones. The palm has five long  bones (these are the metacarpals). Each finger has 3 bones and the thumb has two.

Many kinds of hands
Most mammals have about the same number of bones in their hands. Some animals have hands that look like human hands. Many mammals have very different looking hands. But if you look at an x-ray, you would see similarities.

Many mammals use their fingers for walking. Dogs and cats run on the tips of their fingers. So do horses! In fact, horses run on the tip of just one finger!

Hoofs
Many animals walk on their fingers and tippy toes. Some animals have a very thick finger nail at the end of the fingers used for moving. This very special kind of finger nail is called a hoof. This hoof is a very thick fingernail and protects the toe. Animals which have hooves are called ungulates.
Hooves - This web page from Enchanged Learning gives many examples of ungulates.