What was your idea of selling them? Like manufacturing them and selling them on a large scale?
That takes a lot of work but it is achievable if you are willing to devote yourself 🙂
I personally make home made treats from ingredients like honey and pumpkin because my dogs love them.
But you should consult with your veterinarian for them to explain you who and where further to go with your idea. You need to fulfill what law says as well so as someone mentioned above, you should also consult with a Lawyer but it is probably best if it is someone who works in a pet industry. Hope I helped! 🙂
