Yeticabra
A Yeticabra is the culmination of two very distinct species. One is a shitszu with an underbite that exposes the bottom row of teeth. The other is a famous Spanish folktale that was made into a well known Hollywood movie called "The Chupacabra"
If you are ever under duress against a Yeticabra be aware that their strength is in their bottom row of teeth. Don't hesitate to run, that may be your only defense.