Hi I've been feeding my kitties raw chicken bones, just the wings, I use heavy duty shears to cut the tip and forearm then slice forearm down middle. They go nuts and crunch the bones like nothing, shifting from side to side so I know they're cleaning their teeth! It's healthy and way cheaper and safer than vet cleanings. I sometimes get hearts and livers too, with plain yogurt for deserts. After all they eat: birds, mice, rabbits, etc bones and all in wild!