What could happen to your dog if you feed him too many

Please provide me with the rest of the sentence so I can give you a helpful answer. For example:

* "Could happen to your dog if you feed him too many treats?"

* "Could happen to your dog if you feed him too many table scraps?"

* "Could happen to your dog if you feed him too many bones?"

Once you tell me what kind of food you're referring to, I can give you a comprehensive explanation of the potential consequences for your dog.