Patty Moore called the veterinarian after her Golden Retriever, Chance, started acting strange, she told CNN affiliate KCNC.
Moore said the 10-year-old dog couldn't stand to eat. "It was like her legs didn't work at all," she said.
Chance's vet diagnosed the dog as having ingested marijuana. The telltale signs: the animal appeared depressed, drunk or stupefied for no apparent reason.