Heraldic tiger, which is called "tyger", to distinguish from the real tiger (tiger), occurring in heraldry, is the body of the wolf, lion's mane and tail, powerful jaws (upper ends in a beak), and an elongated snout. So, obviously, was represented by medieval artists, never seen the real beast. According to legend, the tigress - a formidable mother, ready to fiercely protect their offspring, but the man could steal her baby, if you will keep in front of a mirror - the tigress will be mesmerized by his own image and lose vigilance. Therefore heraldic tigers sometimes portrayed staring in the mirror.

Sorry for my machine engrish)