Well technically yes. Any food that contains animal products including flesh, bone, and fat. Those animals (steer, chickens, turkeys, lambs, etc.) are being euthanized to provide food, for pets and people. The study found trace amounts of pentobarbital in 2 samples, and assumed it was from animals who had been euthanized with the drug. However, pentobarbital is a barbiturate also used as an anesthetic and sedative and may also be used to control epileptic seizures.