The deceased animal is a mere dog, known as a "Mexican Hairless". Pictures of domesticated examples of this indiginous canine from Central America can be found on google. Though considered by conventional standards to be "ugly", Mexican Hairlesses have a devoted base of owners and breeders across the United States. Though not as common as Coyotes, this breed of natural predator is well suited to surviving the brutal heat of the souther climes, having evolved to be hairless. Since this species originally occupied tropical and sub-tropical regions of Central America, where winter is not a season experienced, no fur is neccesary to survive any cold temps. The natural range of wild packs of this canine did not originally reach as far north as Texas, which does in fact experience cold and even snow. It is likely this was merely a feral dog that at one time was born as a domesticated pet, which got loose or was rejected by its owners. (As ugly as these things are, that's understandable.)