If you are feeding Greenies®, make sure you are feeding the correct size relative to the size of your dog. Monitor your dog to make sure he chews it adequately and does not "gulp" it. If he does not chew it adequately or if you have a small dog, you may want to consider not feeding Greenies®, offering a different treat, or sticking with good old plain good quality dog food which is all most dogs need.
If you feed Greenies as treats to your pet, be alert for signs of retching, trouble swallowing, difficult breathing, vomiting, or lethargy. If observed, contact your veterinarian immediately.