Basilisk

The Basilisk is often described as a crested snake, and depicted as a cock with the tail of a snake. In Greek, it is called "regulus" which means "little king", because it is the king of creeping things. It's odour can kill other snakes, and its stare can kill a person" The Weasel is the only creature that can kill a Basilisk. The Basilisk is said to be hatched by a toad from the egg of a cockerel.