(1). Birds.
(2). humans.
(3). trees.
(4). pugs.
(5). mounds.
(6). cats.
(7). otters.
(8). bones.
Q: Fact 1: Mammals have a layer of fat under the skin to help insulate the body. Fact 2: Pugs are mammals and mammals shed. Given the two facts above, what have a layer of fat under the skin?
A:
(4).