1. Get the Details
There are two major reasons pets get overheated, Dr. Aspros said, hyperthermia and their upper respiratory systems. Hyperthermia occurs when animals are trapped in an environment (like a car or the beach on a hot day) that overwhelms their ability to cool themselves. Pets with compromised upper airways, like bulldogs, or an acquired condition like paralysis of the larynx have more difficulty removing heat in their bodies through panting, Dr. Aspros said. These animals often find that, in attempting to cool themselves, they generate more heat through exertion and can fall victim to heat stroke.
Symptoms of heat exhaustion include excessive panting or labored breathing, increased heart and respiratory rate, drooling and mild weakness, according to the ASPCA. More severe symptoms can include seizures, bloody diarrhea and vomiting and a body temperature of over 104 degrees Fahrenheit.