The Ontario SPCA has received almost 20 calls in two days about dogs left in hot cars as temperatures soar to mid-30s.

The animal welfare agency reported that 10 people called on Tuesday to report dogs trapped in hot cars. On Monday, another scorching hot day, the OSPCA received nine calls.

Leaving a dog in a car during extreme heat can be fatal. It's also against the law.

On Tuesday, York Regional Police were called to Vaughan Mills mall when security there reported a dog in a hot car that was in visible distress.

Police came and removed the dog from the car.

Police are reminding the public that bylaw officers are laying $930 fines for animals left in hot cars.

Temperatures above 30 C can feel like 70 to a dog in a car, the OSPCA said. An online campaign against leaving unattended pets in hot cars, called #nohotpets, encourages owners to leave dogs at home when out running errands.