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.
Milia are tiny white cysts often found on the faces of infants and sometimes adults. These bumps occur at the base of hair follicles. They are caused by keratin (a substance your skin produces) or other debris that clogs pores. When milia appear on the faces of infants, the condition most often clears up by itself.