Amigo is Spanish for "friend," one of the most straightforwardly affectionate names a male pet can have. It's the name that says the relationship is everything. At rank 2172, it appears in registries from both Spanish-speaking and English-speaking households, because the word is too universally understood in American culture to be confined to one community.
Cross-Cultural Warmth
Amigo has worked its way into American English as a casual term of address, which gives it a warmth that transcends its Spanish origin. Chihuahuas and Xoloitzcuintlis carry the name with direct cultural connection. But the word works on any breed because friendship is universal.
The Meaning Is the Name
Unlike most pet names where the meaning requires etymological explanation, Amigo's meaning is transparent in the moment. Everyone who hears it immediately understands the relationship the owner is describing. Browse pet names for other Spanish-origin options.
Counter-Reading: Slightly Informal
Amigo reads as casual rather than formal, which for most pets is exactly right. If you want the same Spanish warmth with slightly more gravitas, Carlos or Diego deliver friendship-adjacent energy with more formal standing in both human and pet naming.