Gordo means "fat" or "chubby" in Spanish — it's a descriptor nickname in Latin American Spanish culture, used affectionately between friends and family rather than as an insult. On a dog, it functions as a loving, direct comment on the animal's build, which is either charming or complicated depending on how you feel about naming pets for their physical characteristics.
The Spanish Nickname Tradition
In Mexican and Latin American culture, gordo/gorda is one of the most common terms of endearment — a way of expressing affection through teasing that doesn't carry the same weight as the English equivalent. Families who use Gordo for their dog are almost certainly in this cultural tradition: it's an affectionate diminutive that says "I love you and I find your roundness delightful" rather than anything critical.
Which Dogs Earn It
The name Gordo lands predictably on well-fed, heavyset, or genuinely round dogs — basset hounds, English bulldogs, and stocky mixed breeds are its natural recipients. A dachshund named Gordo has a very specific visual comedy that's hard to beat.
Cultural Context Matters
Gordo works best when it comes from within the cultural tradition that deploys it affectionately. Outside that context, it can read as unkind, even if the intent is warmth. Owners who choose it across cultural lines are usually either fully informed about that tradition or discovering it after the fact. Either way, the dogs in question seem entirely unbothered by the naming convention. See more Spanish-origin pet names at pet name explorer.