A baby leopard is called a cub. Cubs stay with their litter mates and mother until they are about two years old, at which time they begin living on their own.
Leopard cubs weigh only 1 pound at birth and open their eyes around 10 days later. They rely on their mother, who is called a leopardess, for everything. Leopardesses give birth to two to six cubs at a time. A male leopard is simply referred to as a leopard. A group of leopards is called a "leap" or a "prowl." Sometimes a leopard group is referred to as a "spot."