Which one of the following sets of animals share a four chambered heart?

1. Amphibian, Reptiles, Birds
2. Crocodiles, Birds, Mammals
3. Crocodiles, Lizards, Turtles
4. Lizards, Mammals, Birds

Subtopic:  Study of Amphibians | Study of Aves & Mammals |
 91%
Level 1: 80%+
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