Canola is still fed to cattle after the oil has been extracted. They also eat the corn husks & cobs left over after canning and the pomace that remains after apples are pressed for juice.

I really think pigs are almost perfect. Sure, cows eat a lot of stuff we throw away, but pigs seemed to be the household recycler. People want sustainable living, and yet throwing all the table scraps to a pig and then eating it a year later is a perfect example.

Oh agreed. I used to get expired produce, prepackaged salads, bread, etc. for free from the local grocery store and feed them to my hogs as supplement to their usual feed. They loved the variety, I think!