Remember that your pet can also get sunburn - especially those with short hair or pink noses. Do not exercise your dog during the hottest part of the day. It's just any easy way for you and your pet to get heatstroke. Make sure that indoor animals have a good source of air circulation. All outdoor animals need access to a shaded area or shelter with a constant supply of cool drinking water.
Summer is pest season.
Check your dog for ticks. Your dog should also be checked for Heartworm ever year. Heartworm is transmitted to dogs by mosquito bites and can be fatal. Don't allow your dog to ride in the back of a pick up truck unless it is safely secured and cannot fall out or become tangled and hang itself. If you are taking your pet with you on vacation, make sure you bring all its normal food, water, any medication and a copy of it's immunizations.