Whales.
One of the branches of the heart channel directly connects with the tongue. So physiologically the tongue has a close relationship with the heart. The heart blood flows up to the tongue in order to assist its normal physiological functions. If there is a pathological change in the heart, it will be reflected in the changes of the tongue. For example, an insufficient supply of heart blood may be manifested by pale tongue proper; heart fire flaring up is reflected by red tongue proper. Pathogenic heat invading the pericardium or pathogenic phlegm obstructing the heart orifice, will produce coma, delirium, and stiffness of the tongue. Thus it is said, "The heart opens to the tongue," or "The tongue is the sprout of the heart."
And now abating in his flurry, the whale once more rolled out into view; surging from side to side; spasmodically dilating and contracting his spout-hole, with sharp, cracking, agonized respirations. At last, gush after gush of clotted red gore, as if it had been the purple lees of red wine, shot into the frighted air; and falling back again, ran dripping down his motionless flanks into the sea. His heart had burst! 'He's dead, Mr. Stubb,' said Daggoo. 'Yes; both pipes smoked out!' and withdrawing his own from his mouth, Stubb scattered the dead ashes over the water; and, for a moment, stood thoughtfully eyeing the vast corpse he had made.