That is not an animal heart! Though some men... Okay all men... would argue it's about the most vital organ there is: balls.
After work I went to a friend's house to witness the butchering of a freshly hunted deer. It was so cool to see where the various cuts of meat come from!
No- the balls do not get eaten. Not even by the dogs. Apparently you're required to keep the balls or milk sack attached after the kill so you can prove to a game warden that you hunted the sex of animal that your tag is for. Always learning...