Mastiff twin finder
There are 226 dogs classified as Mastiff in the PetMatch pool right now. Upload one photo of your Mastiff and our AI will find the one that looks most like yours — free, in under a minute.
Breed guide
Mastiff Twin Finder: Find Your Mastiff's Lookalike
Find your Mastiff's twin on PetMatch. One photo matched against 226 real Mastiffs in the pool, scored by mask, wrinkle and jowl shape. Free to try.
Mastiffs waiting in the pool
About the Mastiff
Mastiffs are typically courageous, dignified, good natured. A typical adult weighs around 73 kg. Because Mastiffs share a breed-standard look, matches within the breed come down to the fine details our model reads from the face — markings, ear set, muzzle shape, and expression. That's what separates "also a Mastiff" from a true twin. Curious how the scoring works? Read what a similarity score really means or the full guide to finding your pet's twin.