[ since fluff has just admitted to nibbling a guinea pig nugget ]
Confessions ...
I did once share a Bonio when out walking in the wilds of Dartmoor with my first dog - to be fair she had just snaffled my last sarnie when I wasn't looking. As virtually inedible biscuits go, it wasn't bad.
I have risked a tiny morsel from a pouch of Tuna for Kitties (can't remember the brand) - it did smell and look very good - it tasted vile beyond belief.
“Various ingredients used in many poor-quality pet foods are not fit for human consumption at all, and may include by-products, chemicals, fillers and parts from '4D' meats (animals which are dying, diseased, disabled or deceased).”