Make sure your dog always has access to fresh, clean water, especially on hot days. Bring a portable water bottle & bowl when you're out and about.
The pavement can get very hot in the summertime & can burn your dog's paws. Stick to grassy areas or walk your dog early in the morning or late in the evening when the pavement is cooler.
If your dog is spending time outdoors, make sure there's plenty of shade available. Set up a canopy or umbrella, or bring a portable shade shelter if you're going to the park or beach.
Temperatures in a car can rise rapidly in just a few minutes, even with the windows cracked. Leaving your dog in a hot car can cause heat stroke or even death.
Summertime is the peak season for fleas & ticks, which can transmit diseases to your dog. Use flea and tick preventative medication as recommended by your vet.
Dogs love frozen treats on a hot day. Freeze water or broth in an ice cube tray or invest in dog-specific ice cream.
While it may seem counterintuitive, shaving your dog's fur can actually make them hotter. A dog's fur helps regulate their body temperature and protects against sunburn.