Question

Why it is much easier for a small animal run uphill than a large animal?

Answer 1

it is much easier for a small animal to run uphill
than the large animal because ,

1) smaller animal have a higher metabolic rate.
2) small animals have lower O2 requirement .
3) the efficiency of muscles in large animals is less than in the small animals .
4) it is easier to carry a small body weight.

hope it will help you...