Review highlights evidence gap on sunscreen safety in pets
Bottom line
Ultraviolet-linked skin cancer in pets puts a spotlight on a prevention gap: veterinary researchers are calling attention to how little evidence clinicians have on safe sunscreen use in dogs and cats. In a July 2026 review in Veterinary Sciences, University of Queensland authors said ultraviolet exposure is a recognized risk factor for dermal hemangiosarcoma in dogs and dermal squamous cell carcinoma in both dogs and cats, especially in lightly pigmented, sparsely haired, hairless, or shaved areas. The review argues that while sunscreen is often discussed as part of prevention, the safety of UV-filter ingredients in companion animals remains under studied. (mdpi.com)
Why it matters: For veterinary professionals, the article underscores a familiar clinical tension: some patients clearly need better UV protection, but the evidence base for topical prevention is thin. FDA has not approved any New Animal Drug Applications for sunscreen or sunblock for pets, according to prior FDA Center for Veterinary Medicine guidance cited by the Animal Medical Center, and experts continue to warn against assuming human products are interchangeable because pets may absorb ingredients through the skin or ingest them by licking. AAHA and other veterinary sources recommend focusing first on practical risk reduction, including limiting midday exposure, using shade, UV-blocking barriers, and reserving pet-safe products for exposed high-risk areas when appropriate. (amcny.org)
What to watch: Expect more discussion around ingredient safety, product claims, and whether veterinary-specific sunscreen evidence, or regulation, starts to catch up with growing awareness of UV-associated disease in companion animals. (mdpi.com)
A new review is drawing overdue attention to an awkward blind spot in companion animal medicine: veterinarians know ultraviolet exposure contributes to some skin cancers in dogs and cats, but they have little species-specific evidence to guide sunscreen use. Published in July 2026 in Veterinary Sciences, the paper says UV light is a recognized risk factor for dermal hemangiosarcoma in dogs and dermal squamous cell carcinoma in dogs and cats, while also warning that the safety of sunscreen UV filters in pets remains poorly studied. (mdpi.com)
That gap matters because the at-risk population is easy to recognize in practice. Veterinary and specialty sources consistently point to hairless pets, animals with short or sparse coats, white or lightly pigmented skin, and shaved or alopecic areas as the most vulnerable sites for solar injury. The typical lesion distribution, including ear tips, bridge of the nose, ventrum, groin, and other thinly haired regions, also fits what clinicians already see with actinic damage and sun-associated tumors. (aaha.org)
The review’s core message is not simply that pets can get sunburned or sun-related cancer. It’s that prevention science has lagged behind clinical need. According to the MDPI summary, the authors call for more research on sunscreen safety in pets, particularly around the potential toxicity of UV filters such as zinc oxide and other ingredients that may be ingested during grooming. That concern aligns with longstanding FDA-linked cautions relayed by the Animal Medical Center: the FDA’s Center for Veterinary Medicine has not approved pet sunscreen drug applications, and it has not evaluated human sunscreens for safety or effectiveness in dogs or cats. (mdpi.com)
The wider regulatory backdrop adds nuance. In people, sunscreen products may come to market under FDA’s over-the-counter monograph framework rather than through individual product approvals, and in June 2026 the agency added bemotrizinol as a permitted active ingredient for human sunscreens. But that human regulatory pathway does not answer the veterinary question, because CVM-regulated animal drugs are handled differently, and products marketed for pets may fall into different categories depending on ingredients and claims. In other words, a sunscreen ingredient’s status in human medicine should not be read as proof of safety in companion animals. That is an inference based on the separate regulatory frameworks and FDA’s own explanation of CVM oversight. (fda.gov)
Clinical commentary from the field reflects that uncertainty. AAHA advises veterinary teams to proactively discuss summer sun risk with pet parents and to consider pet-safe sunscreens, paw protectants, and UV-blocking clothing for at-risk animals, while balancing heat stress risks if garments are used. Tufts’ Cummings School similarly notes that sun-related cancers in pets tend to occur where fur is sparse and says sunscreen can be used in dogs, but it is more cautious for cats because grooming raises ingestion concerns; it recommends UV-blocking windows or screens for indoor cats with significant exposure. (aaha.org)
Why it matters: For veterinary professionals, this is less a product story than a counseling story. The review gives clinicians a stronger basis to talk about UV exposure as a welfare issue, particularly for high-risk breeds, hairless pets, patients with clipped surgical fields, and animals living in high-UV regions. It also reinforces that prevention plans should likely start with environmental controls, shade, schedule changes, protective barriers, and close skin surveillance, rather than defaulting to human sunscreen products. That’s especially relevant because recurrent or de novo lesions can mean repeated surgeries, added cost, and long-term discomfort for patients. (mdpi.com)
The review may also sharpen conversations about product selection and client expectations. Some consumer and veterinary-facing sources recommend pet-formulated products and warn against ingredients that may be problematic if licked, but the evidence base remains inconsistent, and there is still no clear, universally accepted veterinary standard for sunscreen efficacy and safety across species. For practices, that means recommendations may need to stay conservative, individualized, and explicit about the limits of available evidence. (akc.org)
What to watch: The next step is likely not a single breakthrough product, but incremental movement: more toxicology and absorption data on UV filters in dogs and cats, clearer veterinary labeling and claims, and potentially stronger guidance from academic dermatology, oncology, toxicology, and regulatory groups on how to protect high-risk patients without creating new exposure risks. (mdpi.com)