The dog days of summer are in full swing, which means it's important to keep your pooch protected from the heat.

The U.S. has experienced unrelenting temperatures this year, with triple-digit highs seen across the country, from the Southwest to the nation's capital. This week another summer heat wave is hitting Southern California, with temperatures rising into the upper 90s and triple digits in the valleys.

And while we're all feeling the impact of the heat, it can be even harder for animals to regulate extreme temperatures.

Dogs, for example, have sweat glands but don't use them the same way humans do.

"They really just have to pant off all the heat they get, and it can be very difficult for them to regulate their body temperature," Dr. Joe Snock, a veterinarian at Mount Laurel Animal Hospital, recently told CBS News Philadelphia. "With dogs, it's going to be a big concern if they're left outside, especially with this heat."

So, how can you keep you four-legged friends happy and healthy amid the heat?

In general, dogs and cats normally drink between 20 and 100 milliliters of water per kilogram of body weight per day, Long said, and can show similar signs when dehydrated, including:

Pets can also burn their paws on hot concrete and asphalt.

"Burns can be mild and superficial or serious and deep, depending on the temperature and the length of exposure," said Long. "The best way to test the temperature is to feel the surface yourself with your hand. If it feels too hot to keep your hand on the ground, then it's too hot for your pet to walk on."

If temperatures are just too hot, try inside activities like hiding treats in puzzle feeders or playing fetch with soft toys, Long said. You can also increase bonding time with brushing or other grooming, she said.

"Pet owners should seek medical attention as soon as possible if their pet displays any symptoms of heat stroke," she said. "After removing your pet from the heat and into a cooler area, use cold water to wet the ear flaps and paws to start the cooling process and transport them in a vehicle with direct air conditioning."