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.
A. Those little bumps are caused by keratosis pilaris, a common skin condition that usually affects the arms and thighs (although it sometimes appears on the buttocks and face, too). It's caused by a buildup of the protein keratin, which can plug a hair follicle, resulting in a bump.
Dermatofibroma are common benign skin tumours that cause lumps in the skin and frequently cause concern upon discovery. The causes of dermatofibroma may include a reaction to trauma such as insect bites but the precise cause is often unclear.