Never leave a pet in a parked car — even at 70°F (21°C), the interior can hit dangerous temperatures in minutes. On walks, test the pavement with your hand; if it's too hot for you, it burns paw pads.
Keep fresh water available at all times and offer shaded rest breaks. Brachycephalic breeds (bulldogs, pugs) and senior pets are especially heat-sensitive. Limit exercise to early morning or evening.
Fireworks and thunderstorms terrify many animals. Create a safe, quiet room with white-noise or calming music, and make sure your pet is microchipped and wearing ID in case they bolt.
Parasites peak in warm months. Stay current on flea, tick, and heartworm prevention, and check your pet after hikes or grassy play. Blue-green algae in ponds can be fatal — keep dogs from drinking stagnant water.
Traveling with pets? Secure them with a crash-tested harness or crate, pack their food and medical records, and never let them ride with their head out the window where debris can cause injury.