Point coloration in cats originated the Siamese and closely related Asian breeds, and is found in many Western- developed modern breeds. It is a form of partial albinism resulting from a mutation that

Point coloration in cats originated the Siamese and closely related Asian breeds, and is found in many Western-
developed modern breeds. It is a form of partial albinism resulting from a mutation that affects tyrosinase, an
enzyme involved with melanin production. The mutated enzyme is thermolabile; it fails to work at normal body
temperatures, but becomes active in cooler areas of the As a result, dark pigment is limited to the coldest
areas of the body, that is, the extremities.
Therefore, Siamese cats are literal heat maps of themselves.
warm kitty
cold kitty