A Manitoba man is making it his mission to remind drivers to keep their dogs out of hot vehicles.

"To say that there's a safe temperature, I would just as soon say no there isn't," said Barry Piasta, founder of dogadoptionmb.com

Barry Piasta donates signs to malls and stores across the province.

There are 50 in place across southern Manitoba and now they are popping up in Winnipeg.

"I think it's a nice reminder. A lot of the pet owners, they may not know that their dogs aren't safe in the car," said Olga Pogrebinskaia from Garden City Shopping Centre.

The Winnipeg Humane Society says it receives five to ten calls a day about a pet owner leaving their dog locked inside a hot vehicle.

"It can hit 42 degrees in a vehicle in a short amount of time. It causes brain damage, damages the kidney, the liver, the heart," said Lorrie Lindsay from WHS.

Whimpering, panting and drooling are signs of distress.

A lethargic or unresponsive dog is a sign its body is shutting down.

Piasta says there are a few simple rules to follow if you see a dog in distress.

He says write down the time you saw the dog, the vehicle's license plate, and notify building security.

"We're not telling people to start smashing windows or anything, I want to get that clear,” said Piasta.