Gavin appears 60 times in the male-leaning pet registry at rank 1705. It's a Welsh name, the Welsh form of Gawain from the Arthurian Knight of the Round Table, meaning possibly "white hawk" or "battle hawk," and in pet naming it's almost certainly a tribute name, landing here because the owner has a Gavin in their life and wanted to honor that connection.
The Name's History and Human-Pet Transfer
Gavin has been in the US top 100 for boys since the 1990s, which means there is an entire generation of adults currently in their 20s-40s who grew up with Gavins as classmates, brothers, and friends. Tribute naming (giving a pet the name of a person you love) is one of the oldest and most common reasons for unusual-sounding names in pet registries. Gavin on a dog is almost always a story about a person. On the human side, Gavin has steady SSA presence. Griffin and Gareth share the Welsh-origin naming register.
Sound and Practicality
Gavin is two syllables with a hard G opening and the -in ending that's common in Welsh and English names. It's easy to call and unambiguous in sound. Nothing about the name's phonetics is particularly suited to pets specifically, but it functions well in the field, short enough to use as a call name and clear enough not to be confused with common command words. Border Terriers and other Welsh-origin breeds make natural matches.
The Counter-Read
Gavin reads as a tribute name to most people who encounter it on a dog. The response is almost always warm — it signals that the owner names their pets from affection rather than trend, which is a genuinely appealing quality.