Its quite an education. For instance, did you know dry dog food was accidently invented by an American watching ships unload in the London harbor. The ships were dumping all the unused dry tack. Wharf dogs were consuming. This occurred roughly 125 years ago. Dogs were domesticated about 3000 (or was it 30,000) years ago. What were dogs eating for all those some odd years??? It certainly wasn't the highly processed c-rap that is sold in stores or Vet offices.
You moan about not knowing about your truck, but remain ignorant about the health and well being of your dog. A being who probably means more to you than a truck.
I'll offer a hint. 4D meat means Dead, Dying, Diseased or Disabled. This also includes road kill and anything going to the Rendering Plant where a meat paste is made then sold to pet food companies. The entire carcass (bones, hide, hooves and all) is fed into an industrial meat grinder/shredder.