It's still just called a 'horse', because horses and ponies are the same species, it's just that ponies are smaller and tend to have different proportions as a result.
Pony.
filly or colt (depending on gender), foal, or yearling
A young male horse is a 'Colt' and a young female horse is a 'Filly'
A young male horse or pony is called a colt.
Yes they can. Any pony can breed with any horse on Howrse.
A male horse/pony is called a stallion. A 'fixed' horse is called a gelding. A young male horse is a Colt.
The smallest breed of horse is a Miniature pony and the name of the smallest pony is called Einstein
A pony
A male pony is often called the same as any male horse. If he is young, then he is called a foal or colt. If he is matured, then he may either be a stallion or gelding, depending of his use, where he lives, etc. The more scientific name for a pony is Equus ferus caballus. A PONY IS NOT THE SAME AS A FOAL! A pony is a mature horse under 14 hands. There are foals, ponies, and pony foals.
Pit-pony.
a pony
A colt is a young male horse. So, in pony society, colt basically means "boy."