Meaning & Story
An informal English compound suggesting a rounded, well-nourished male figure — used affectionately for a generously proportioned pet, the -boy suffix adding a warm, masculine familiarity.
Fatboy is a name that is unapologetically fond of its subject. It's given to a pet who has leaned fully into their physical abundance and is thoroughly at peace with this, as are all the humans around them. There's a particular warmth in naming a pet for a quality that in other contexts might be unkind — it becomes, instead, a declaration of total acceptance and affection. Fatboy pets tend to be supremely confident, deeply comfortable, and among the most beloved animals in any household.