"Masculine" is a term that describes male breeding animals that really look the part. Think of bulls, boars, rams, or bucks that seem burly and rugged. They're not just more muscular, they also have stronger bone structure and a stouter look to their heads. In bulls, you'll notice a more prominent crest (the hump of muscles over the neck and shoulders).

Larger testicles can also be a sign of a more masculine animal. So, in a nutshell, a masculine animal is one that's more robust, rugged, and well, more manly in appearance. It's like they've hit the animal gym and are all beefed up.
Questions that use this term.
Who would you deem to be the ultra-masculine herd sire?
Between #1 and #3, who is the bull with bigger testicles and more masculine head and features?
Between #2 and #3 who is the more masculine, larger testicled bull?
Which bull is the most masculine in appearance?
Between #2 and #4, who is more masculine in terms of head size, foot size, and feature?
Species Distribution of Term
Distribution of the types of classes in our database this term is used in.