A Prince Edward Island dog owner is warning others about the potential that pets could be exposed to drugs like marijuana and even opioids in public spaces.

John Pickard and his six-month-old Bernese mountain dog Ellie were at Upton Farmlands in Charlottetown's West Royalty neighbourhood last week when the dog got into some trash on the ground.

"Everything was good until she got into the car," Pickard said. "I got home and then she got pretty lethargic and she was tired, not eating."

He tried to w…