Say hello to Tillie, whom I adopted along with her son Billy (previously introduced) when her owner died.  Unlike Billy, Tillie is not so cute (though she has her moments).  She is big and ungainly and she meows in the most irritating way, and she throws up hairballs all the time.  She also leaves gigantic smelly poops in the box which she doesn't cover.  She ran away for a while and was starving, so now she eats and eats and eats.  She is so heavy that I can barely pick her up.

Tillie is not actually a cat.  She is a ratodon (one-half rat and one-half mastodon) of the genus rattus mastodontus gigantus irritatus.  She is a perfect specimen, having the snout, color and foraging habits of the rat, and the girth and woolly coat of the mastodon.