What animal has a bone in its heart?

Indeed, some animals have a bone several centimeters in size in their hearts. These animals include camel, deer and cow. In the presence of this bone, the animal’s heart becomes more resilient, allowing it to overcome a long exhausting movement, and for such nomadic animals as a deer and a camel, this is simply necessary.
As for the cow, then everything is understandable. To ensure the reproduction of milk, more than 15 tons of blood passes through the udder of a cow, otherwise this process will not occur.