Using dogs to get opioids. The U.S. opioid crisis let to almost 50,000 overdose deaths in 2017. But while lawmakers and regulators have clamped down hard on doctors' prescribing practices, one avenue for obtaining prescription opioids appears to have been overlooked. According to a new study, veterinarians are prescribing large quantities of opioids to pets, raising concern that some people might be using Fido to feed their addiction.