A dog was tested positive for methamphetamine and heroin when it was found during an arrest in Tustin, California.
After officers served an arrest for Joshua West, 40, on March 22 in Orange County, the dog named Bubba was found in a hotel room, Tustin Police Lieutenant Robert Wright told CNN.
West, the dog's owner, was on parole for drug violations.
Illegal drugs and used needles were also reportedly found in the hotel room.
The terrier mix puppy was eventually placed under the care of Orange County Animal Care (OCAC) after being picked up during the arrest.
The police were contacted as the dog was suspected to be under the influence of drugs.
According to CNN affiliate KCBS/KCAL, animal control officers noticed Bubba was acting "lethargic".
Bubba had to undergo a urine test and the results came back positive for meth and heroin.
"This strikes me as pretty horrible. This is the first time we've ever heard of someone reporting that an animal has been under the influence," Lt Wright told KCBS/KCAL.
How the drugs managed to get into the dog's system still remains a mystery for the authorities.
Along with illegal drug possession, Tustin police have requested that West, now in the Orange County jail for the outstanding warrant, also be charged with animal cruelty, CNN reported.
Bubba will be put up for adoption after he recovers.