What do you call a young male horse?

The term used to describe a young male horse is "colt." This term specifically refers to male horses that are usually less than four years old. Understanding the specific terminology used in animal science is crucial, as it allows for more precise communication regarding animal management, breeding, and care.

The other options represent young animals of different species or sexes. A "wether" is a castrated male sheep, a "pullet" is a young female chicken, and an "ewe lamb" is a female sheep that is still considered a lamb. Each of these terms is relevant to their respective species and highlights the importance of utilizing correct terminology in the context of animal science.