You are presented with the question "What requires stamina to succeed at running?" and the following answer choices: 
- Bats
 - pigeons
 - walking
 - humans
 - Mammal
 - tigers
 - bears
 - asses

Now knowing that an animal requires stamina to succeed at physical activities and asses are great runners and there is no match in speed and stamina in the entire animal kingdom, choose the best answer.


 

        asses 