Yeti is a male pet name borrowed from the cryptid, the Himalayan "Abominable Snowman," and it works especially well on large, white, or densely-coated dogs where the physical resemblance makes the name feel accurate rather than random. The Yeti brand cooler has also given the word new associations with outdoor adventure culture since roughly 2015.
Cryptid and Outdoor Culture Crossover
The Yeti brand has been culturally dominant among the hiking and outdoor sports community, and a dog named Yeti now reads as either a cryptid reference or an outdoor-brand nod depending on context. Great Pyrenees, Samoyeds, and Bernese Mountain Dogs, large and fluffy and mountain-adjacent in look, are the natural matches.
Sound Fit
YEH-tee is two syllables with a strong opening and a soft landing. It's easy to call with enthusiasm, and the fun factor is genuinely high at the dog park.
Counter-Reading: The Cooler Association Is Inescapable
"Oh, like the cooler?" is the response you'll hear from most people under 45. If the brand association doesn't bother you, Yeti is a name with real personality. If you want the cryptid reading without the product connection, Bigfoot sidesteps the brand entirely and is arguably funnier.