A study of 53 two-cat households, conducted by researchers at Ghent University and the University of Lincoln and published in Applied Animal Behaviour Science, has upended the common assumption that cats licking one another is solely a sign of social bonding. The observational research, which enlisted amateur scientists to film allogrooming episodes, found that the behaviour can also serve as a passive-aggressive signal to avoid conflict or to claim a favoured resting spot. When body postures were not synchronised—one cat leaning over another, for instance—recipients often flattened their ears, swiped, or exhibited stress indicators such as yawning and lip-licking. Grooming focused on the head and ears, by contrast, typically occurred in relaxed, positive settings, suggesting context and posture are critical to interpretation.

Veterinary specialists across Latin America and Europe are simultaneously urging owners to read subtle behavioural cues in dogs and cats more carefully. In Mexico, experts cited by the American Kennel Club note that persistent paw-licking in dogs can signal pain, allergies, or dermatological conditions rather than routine cleaning. Brazilian veterinarian Bruna Isabel Tanabe describes how food-seeking in pets often stems from boredom or learned expectation, not genuine hunger, and recommends testing the animal’s willingness to engage in play or interaction before offering snacks. Argentine clinicians add that highly affectionate cats frequently exhibit dependency and require structured play sessions distributed throughout the day to prevent anxiety.

Seasonal pressures amplify these risks. Russian veterinary adviser Elena Frolenko warns that even indoor cats and dogs can overheat, particularly brachycephalic breeds and those with cardiac conditions, and advises maintaining room temperatures of 20–25°C, providing multiple water stations, and feeding moisture-rich diets during hot spells. Mexican guidance from the National Autonomous University highlights that rainy-season humidity fosters parasites and bacterial infections; owners are advised to dry pets thoroughly after walks and avoid stagnant water.

Human health also faces seasonal shifts. The World Health Organization’s Russian office points to summer temperature rises as a factor in foodborne illness spikes, stressing hand hygiene and safe food handling. Swedish oncologist Robel Malki notes that increased alcohol intake, grilled processed and red meats, prolonged sun exposure, and reduced physical activity during holidays collectively elevate cancer risk, with alcohol alone linked to roughly 2,000 cases annually in Sweden. He cautions against over-reliance on sunscreen, which can lead to longer UV exposure.

The cat allogrooming study’s authors call for further research to confirm the social functions they observed and to develop strategies for recognising and mitigating stress in multi-cat households. For pet owners and humans alike, the emerging picture is one in which summer’s pleasures demand closer attention to behavioural and environmental signals.