You are presented with the question "Which animal has a circulatory system with a three-chambered heart?" and the following answer choices: 
- animals
 - Salamander
 - fur seals
 - mammals
 - alpacas
 - a fish
 - warm-blooded
 - barnacles

Now knowing that amphibians have a relatively complex circulatory system with a three-chambered heart and frogs, toads and salamanders are amphibians, choose the best answer.


 

  Salamander       