Fact 1: Hair is a fiber that is found only in mammals.

Fact 2: Mammals have fur or hair.

Given the two facts above, answer the question "Fur is a fiber that is found only in what type of animal?" with the following options: 
- goats
 - mammal
 - humans
 - mushrooms
 - animals
 - fish
 - protists
 - feet


 

  mammal       