Can dogs actually get sunburned, and which dogs are most at risk?

Yes, dogs get sunburned through the same UV radiation mechanism as people, and the risk is highest on areas with thin or absent hair, such as the nose, ear tips, belly, and groin. Dogs with white or light-colored, short coats, including Dalmatians, Bull Terriers, Boxers, and Pit Bull-type breeds, are especially vulnerable because they lack the pigment and coat density that block ultraviolet rays, according to the Merck Veterinary Manual (2024). Hairless breeds such as the Chinese Crested and Xoloitzcuintli face the same exposure risk as unprotected human skin.

Repeated sun damage does more than cause a single painful burn. The AVMA notes that chronic UV exposure is a recognized risk factor for skin cancers in dogs, including squamous cell carcinoma and hemangiosarcoma of the skin, which tend to develop on sparsely haired, sun-exposed areas over months to years of cumulative exposure (American Veterinary Medical Association, n.d.). This makes sunburn prevention a long-term health issue, not just a one-day comfort concern.

What does a sunburn on a dog actually look like?

A sunburned dog typically shows pink or red skin, mild swelling, and visible discomfort when the area is touched, most commonly across the bridge of the nose, the tips of upright ears, and the belly of dogs that sunbathe on their backs. In more severe cases the skin can blister, peel, or crack within 24 to 48 hours of prolonged exposure, similar to a second-degree burn in humans (Cornell Riney Canine Health Center, n.d.). Owners sometimes mistake early sunburn for an allergic reaction or hot spot because the redness and itchiness overlap, so a same-day exam is worthwhile if the pattern matches sun-exposed body parts rather than random skin locations.

Dogs recovering from sunburn often lick or chew at the affected skin, which can turn a mild burn into a secondary bacterial infection requiring antibiotics. Veterinary dermatologists commonly recommend an Elizabethan collar or soft cone during healing specifically to interrupt this self-trauma cycle, alongside a veterinarian-approved topical treatment rather than human sunburn creams, many of which contain ingredients like zinc oxide that are toxic if a dog licks and swallows them.

Is sunscreen safe to use on dogs, and how should it be applied?

Dog-specific sunscreen exists and is worth using on high-risk dogs, but human sunscreen should not be substituted because it frequently contains zinc oxide or para-aminobenzoic acid (PABA), both of which are toxic to dogs if ingested through licking, per the ASPCA Animal Poison Control Center (n.d.). Owners should look for a product labeled specifically for veterinary or pet use, ideally fragrance-free and rated broad-spectrum SPF 15 or higher, applied about 20 minutes before outdoor time to the nose, ear tips, and belly.

Reapplication matters as much as the first application, since swimming, drooling, and rolling in grass wear sunscreen off within a couple of hours in most cases. For dogs that spend a lot of time outdoors in summer, many veterinary dermatologists suggest combining sunscreen with physical barriers such as lightweight UV-protective dog shirts, which avoid the ingestion risk altogether and are especially useful for hairless or thin-coated breeds during peak midday sun.

Why is a hot car so much more dangerous for dogs than it looks?

Cars heat up far faster than most people estimate: research cited by the American Veterinary Medical Association shows that on an 85°F day, a car's interior can reach 102°F within 10 minutes and 120°F within 30 minutes, even with a window cracked (American Veterinary Medical Association, n.d.). Dogs cannot cool themselves as efficiently as humans because they rely primarily on panting rather than whole-body sweating, so they lose the ability to regulate body temperature much sooner in an enclosed, superheated space.

This is why leaving a dog in a parked car for even a short errand carries real risk of heatstroke and death, not exaggerated caution. Dozens of U.S. states have enacted laws either protecting bystanders who rescue distressed animals from hot vehicles or directly banning leaving pets unattended in cars during extreme heat, reflecting how consistently this scenario appears in veterinary emergency case data every summer.

What are the first signs a dog is overheating on a hot walk?

Early heat stress in dogs shows up as heavy panting that doesn't slow with rest, bright red gums or tongue, thick ropey drool, and a reluctance to keep walking, according to guidance from the Cornell Riney Canine Health Center (n.d.). Flat-faced breeds such as Bulldogs, Pugs, and Boston Terriers overheat faster than longer-nosed breeds because their airway shape already limits efficient panting, so owners of brachycephalic dogs should treat even moderate 80°F days with caution during midday hours.

Asphalt and concrete pose a second, separate risk to a dog's paw pads rather than core temperature. On a 77°F day, asphalt can reach around 125°F, which is hot enough to burn skin within 60 seconds, based on testing referenced by the American Veterinary Medical Association (n.d.). A simple rule many veterinarians recommend is the 7-second test: if the pavement is too hot for a bare human hand held on it for 7 seconds, it is too hot for paws, and walks should shift to early morning or evening.

How should you cool down a dog who is showing signs of heat stress?

If a dog shows early overheating signs, the first step is moving them immediately to shade or air conditioning and offering small amounts of cool, not ice-cold, water. The AVMA recommends applying cool (not cold) water to the body, particularly the belly, groin, and paw pads, and using a fan to promote evaporative cooling while monitoring for improvement over 10 to 15 minutes (American Veterinary Medical Association, n.d.). Ice-cold water or ice packs directly on the skin can cause blood vessels to constrict and actually slow heat loss, which is why lukewarm water is the preferred method.

Any dog that progresses to vomiting, wobbly gait, collapse, or seizure-like activity needs emergency veterinary care immediately rather than home cooling alone, since these signs indicate the body's temperature regulation has failed. Veterinary teams will typically continue active cooling during transport and monitor rectal temperature, aiming to stop active cooling once the dog reaches about 103°F to avoid overshooting into hypothermia.

What everyday precautions actually prevent summer emergencies?

Most heat-related summer emergencies are preventable with a handful of consistent habits: scheduling walks and exercise for early morning or after sunset, always providing fresh water and shaded rest spots outdoors, and never leaving a dog unattended in a parked vehicle, even briefly. Penn State Extension's companion animal care guidance also recommends gradually building up exercise tolerance for dogs during the first hot weeks of summer rather than resuming a winter-level exercise routine all at once, since acclimatization to heat takes roughly one to two weeks (Penn State Extension, n.d.).

Senior dogs, overweight dogs, and those with heart or respiratory conditions need an extra margin of caution because their internal cooling systems are already working with less reserve capacity. For these dogs, veterinarians often recommend keeping outdoor time under 15 to 20 minutes during peak afternoon heat and choosing indoor enrichment activities, like puzzle feeders or air-conditioned play, on days when the heat index climbs into the 90s.