I make dog treats out of jello by adding chicken stock regularly. The stock comes from boiling rotisserie chicken leftovers. It costs about a dollar per batch. My dogs love it and it's good for them
Help yourself, your pets will love you for it. A couple of tips if you don't mind: I boil the rotisserie chicken carcass (or any kind of meat and bones) for 10 hours on very low heat and covered. It takes that long to extract nutrients. You can use canned stuff but it's full of salt. I pour the whole thing into a pie tin (with gelatin) and sprinkle molasses yeast flakes on top. You can find this at health food stores. It's got lots of nutritional benefits and if your pet ever suffers from a lack of appetite a little on top of their food may help. A little bit goes a long way. Bon appetit!