Is stallion masculine feminine common or neuter?

Stallion refers to a male horse, particularly one that is, or can be, used for breeding.

In the English language it can be important to know the gender of an animal because some pronouns and other Words are gender-specific. (He, him, his, himself; she, her, hers, herself)

Example sentence:

"That stallion is a fine horse. She He is 10 years old and has sired many potential champions."