The ONLY way to produce a tiger or lion with a white coat is through inbreeding brother to sister or father to daughter; generation after generation after generation. The kind of severe inbreeding that is required to produce the mutation of a white coat also causes a number of other defects in these big cats.
Causes of Bumps on Skin. 1  Acne (Pimples) Acne is a localized skin inflammation as a result of overactivity of oil glands at the base of hair follicles. 2  Actinic Keratosis Actinic keratoses are rough, scaly patches of skin that are considered precancerous and are due to sun exposure.
The slightest bump of the body against an object can cause bruising among people who do not have an adequate layer of body fat. This is the most common cause of easy bruising in the very young or very old. These are ages where a person's body fat is just starting to develop or is already thinning out.