How does a colt nurse?

ALL mammals have breasts... but in most of them it's the female that lactates. Colts nurse in the same way other mamals nurse. Look at a female cat... then look at a cow. Its not as obvious on all mammals as it is in with some.

Mares have 2 teats located near the hind legs, they are somewhat similar to a cows udders but nowhere near as large!

http://photopc.co.uk/horse_breeding_files/image023.jpg