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Crocodiles use their lungs and other organs as movable devices to help dive, steer, and stay afloat.
And unlike any other reptile, crocodiles have a four chambered heart, which also assist in diving.

Crocodiles use their lungs and other organs as movable devices to help dive, steer, and stay afloat.

And unlike any other reptile, crocodiles have a four chambered heart, which also assist in diving.

(Source: Animalismetazoa)

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