Fact 1: Amphibians have a relatively complex circulatory system with a three-chambered heart.

Fact 2: Toads and frogs are both amphibians.

Given the two facts above, answer the question "What has a three chambered heart?" with the following options: 
- alpacas
 - goats
 - elms
 - bats
 - orchids
 - mammals
 - a fish
 - toads


 

        toads 