Although its looks frightening, it is actually kind and affectionate. It is very popular among women.
– Pokemon Gold Pokedex
For some reason, Snubbull is the “Fairy” Pokemon (sharing the species name with Clefairy family), even though it’s not based on a fairy at all. It’s based on snubby little dogs that some people like to put bows on. It’s 75% female, probably due to its pink-ness and bow-ness, haha. Its Pokedex entry says it’s kind and affectionate, but it looks pretty mean and angry.
Snubbull is the first Normal dog-based Pokemon; there have been quite a lot of Normal cat Pokemon, but not as many dog-based ones.
Stat-wise, its best stat is in its Attack.