If you do happen to see a pet alone in a car during hot weather, alert the management of the store where the car is parked. If the owner does not return promptly, call local animal control or the police department immediately.

Don't Put Your Pet in the Back of a Truck

It is very dangerous, and in some states illegal, to drive with a dog in the back of a pick-up truck. Not only can flying debris cause serious injury, but a dog may be unintentionally thrown into traffic if the driver suddenly hits the brakes, swerves or is hit by another car. Dogs should ride either in the cab (in a crate or wearing a seat belt harness designed for dogs) or in a secured crate in the bed of the truck.

Watch Out For Fertilizers and Deadly Plants

Plant food, fertilizer and insecticides can be fatal if your pet ingests them. In addition, more than 700 plants can produce physiologically active or toxic substances in sufficient amounts to cause harmful effects in animals.

Stay Bite-Free

With people and dogs spending more time outside, dog bites are likely to increase in the warmer months. Spaying or neutering your dog reduces the likelihood that he will bite and provides many other health benefits.

Pet Care 101

Make sure your pet is always wearing a collar and identification tag. If you are separated from your pet, an ID tag may very well be his or her ticket home.

Check with your veterinarian to see if your pets should be taking heartworm prevention medication. Heartworm disease, which is transmitted by mosquitoes, can be fatal in both dogs and cats. Another warm weather threat is fleas and ticks. Use only flea and tick treatments recommended by your veterinarian. Some over-the-counter flea and tick products can be toxic, even when used according to instructions.

http://www.redcross.org/prepare/disaster/pet-safety/protecting-pets-from-heat