What are slaughter by-products?

As a result of slaughtering animals, many by-products are created. These include (varies per animal and for what use the animal is for)...

*Blood

*Organs (commonly used = heart, liver, kidneys, lungs, tongue....not commonly used = eyes, brains, bladder, ect.)

*Skin / Hides

*Bones, Teeth, Marrow

*Tails

*Ears, Nose

*Hooves / Claws

* Gelatin