The rarest most exotic and fierce and frightening creature in the world - the wild and ferocious, man-cave dwelling, beer drooling, football watching, fixing-toilets-with-shirt....husband.
Hmm...for my family; nothing too out of the ordinary. The most uncommon of our animals would be the gray squirrel (died of stroke) and the flying squirrel. Though we've owned lots of other animals. Like my bearded dragon.