The four-chambered heart is found in
Draco
Hemidactylus
Tortoises and turtles
Crocodile
Draco
Crocodile
Crocodile
Lizards, tortoise, and crocodiles are all reptiles. While most reptiles have a three-chambered heart, the crocodile has a four-chambered heart. Rat is a mammal. All mammals have four-chambered hearts.