Now the sensible, rational part of me knows that there is no real difference between eating a pig's heart and eating its bum, but jesus, pig heart sounds like some nasty sh*t. I would guess it's pretty tough as well, given the work the muscle does. However I was in a big Morrisons and I noticed that they sell this stuff, and it's dirt cheap. A pound is about 60p Given the rubbish that is in dog food - water, cereal, ash - it could be the absolute kit for your hound - ten minute simmer in a quarter inch of water, cool, et voila monsieur furryface, enjoy. I do, though, think that some aspiring Bear Grylls should stew some of this stuff for four hours and tell everyone what it tastes like. It might make a wicked pork curry, if you can forget what it is.