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

Fact 2: Frogs, toads and salamanders are amphibians.

Given the two facts above, answer the question "Which animal has a circulatory system with a three-chambered heart?" with the following options: 
- animals
 - Salamander
 - fur seals
 - mammals
 - alpacas
 - a fish
 - warm-blooded
 - barnacles


 

  Salamander       