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Which animal has three hearts?

giraffe

short-eared owl

cuttlefish

there is no such animal

Cuttlefish is a Cephalopod. Cephalopods are characterized by three hearts: the central heart, and two additional gill hearts (bronchial hearts) at the base of their gills. They have two circulatory systems: big (heart-body-gill heart) and small (gill heart-gills-heart).

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They have a large oxygen supply from the start

Oxygen is created during protein reduction

Oxygen comes in through pores in the shell

They don't need oxygen at all

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