Contents: Beef Heart Your choice between a 2oz or 4oz pack. There is over 1 full pound of Beef Heart (per dried) in every 4oz bag! Whenever I think of Heart I think of Taurine Taurine is an amino acid that aids in cardiac function, eye health, fights obesity, inproves immune system function, supports reproductive health, reduces seizure symptoms and defends the liver against damage from free radicals As many of you already know, it is believed that low levels of Taurine leads to a diagnosis of Dialated Cardiomyopathy Taurine in both humans and dogs can be produced from other amino acids whereas cats are unable to synthesize Taurine from other food ingredients and must get it from their diet That said, dog breeds that are predisposed to DCM include Cocker Spaniels, Golden Retrievers, Labrador Retrievers, Newfoundlands, Saint Bernards, English Setter Dalmatians, Portuguese Water Dogs, and English BulldogsDespite a raw fed diet typically having abundant amounts of Taurine, I still always make sure to include hearts when doing my personal homemade grinds for my animals Best Suited For: Any breed of cat or dog, any size Storage Instructions - No need for a freezer or fridge, this item does just fine in a cool and dry space!