Name creature which have two hearts.
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Do you mean two types of heart?
In vertebrates, take the case of frog.It has lymph hearts and and normal blood pumping heart.
If you take blood pumping heart into to consideration, then fish have single heart(with one atrium and one ventricle).
Crocodiles, birds, and mammals have double heart( heart with two atria and two ventricles).
In invertebrates, take the case of an earthworm.
It has lateral hearts and laterooesophageal hearts.
In sepia, there are branchial hearts and ordinary blood pumping heart.
In vertebrates, take the case of frog.It has lymph hearts and and normal blood pumping heart.
If you take blood pumping heart into to consideration, then fish have single heart(with one atrium and one ventricle).
Crocodiles, birds, and mammals have double heart( heart with two atria and two ventricles).
In invertebrates, take the case of an earthworm.
It has lateral hearts and laterooesophageal hearts.
In sepia, there are branchial hearts and ordinary blood pumping heart.
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