Fur is a fiber that is found only on what kind of animal?\nOptions:\n- (A) animals\n- (B) reptiles\n- (C) bird\n- (D) humans\n- (E) mammals\n- (F) insects\n- (G) goats\n- (H) Animal fur
Stream of thoughts:
(E)
Hair is a fiber that is found only in mammals.

All mammals have fur or hair.

Fur is a fiber that is found only in mammals.

.

Final answer: (E)