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.
Last Updated: April 2008 Â© 2008 What is lumpy skin disease and what causes it? Lumpy skin disease is a viral disease of cattle that is spread by biting insects. The virus, which is closely related to the pox viruses of sheep and goats, and causes nodular skin lesions on the animalâs body.