Health · July 9, 2026 · 8 min read
Extreme heat: heatstroke signs in dogs and cats before it is too late
In Mexico, hot seasons require changes to walks, transportation, and stays. Recognizing intense panting, weakness, or gum color changes can prevent an emergency.
UNAM has shared recommendations to protect pets from heat. Dogs and cats do not release heat like people do, and they can decline quickly when sun, enclosure, humidity, intense exercise, or low water availability combine.
| Shade | Avoid walks during peak heat and check pavement temperature. |
|---|---|
| Water | Fresh water, shade, and ventilation should be available all day. |
| Signs | Heavy panting, weakness, vomiting, or disorientation require veterinary attention. |
| Avoid | Never leave pets inside a car, even for a few minutes. |
The first adjustment is timing. Walks should happen early or later in the day, once pavement is cooler. If the ground is uncomfortable for your hand, it can hurt paws. Brachycephalic, senior, overweight, cardiac, and young animals need extra care.
Warning signs include intense panting, drooling, very red or purple tongue, weakness, vomiting, diarrhea, disorientation, tremors, or collapse. Do not wait for it to pass. Move the pet to a cooler place, offer water without forcing, and contact a veterinarian.
Transportation and services also matter. A safe stay in hot weather needs shade, ventilation, available water, rest, and monitoring. Intense play should alternate with breaks because an excited dog may keep running after its body is already stressed.
Villa CanInna recommends telling the team about past heatstroke, breathing problems, or low exercise tolerance. That information helps adjust patios, breaks, and activity schedules.
A heat plan should match the animal's risk
Animals do not tolerate the same combination of temperature, humidity, and activity. Brachycephalic dogs, puppies, seniors, animals with obesity, and cardiac or respiratory patients need shorter outings, cooler schedules, and closer monitoring. Before daycare or travel, provide written limits for exercise, continuous access to water and shade, medication details, and the number of the clinic that knows the pet's history.
Persistent heavy panting, thick saliva, weakness, confusion, vomiting, diarrhea, abnormal gums, collapse, or seizures should be treated as an emergency. Move the animal to a cool place and begin gradual cooling with cool water and airflow. Do not use ice water. Call a veterinary hospital while arranging transport. Apparent improvement does not rule out internal injury, so professional evaluation remains necessary.
Sources consulted
Adapted from Gaceta UNAM recommendations for protecting pets during hot weather.
