Signs of Stress in Pets That Owners Frequently Overlook

Dogs yawn when they're tired — but they also yawn as a calming signal, a term coined by Norwegian dog trainer Turid Rugaas to describe behaviors dogs use to self-soothe or communicate discomfort. If your dog yawns repeatedly during nail trims, vet visits, or while being hugged by a child, that's stress — not sleepiness. Cats yawn under stress too, though it's less commonly discussed.

A quick flick of the tongue across the lips or nose — especially when no food is present — is another well-documented calming signal in dogs. It can appear during interactions with strangers, in response to direct eye contact, or when a dog feels pressured. Because it lasts less than a second, most owners miss it entirely. Watch for it during greetings, training sessions, or veterinary handling.

Whale eye refers to the crescent of white visible at the edge of a dog's eye when they turn their head away but keep their gaze fixed on something — revealing the sclera (white part) more than usual. It signals unease, often in response to proximity, resource guarding, or an approaching person. Misreading whale eye as curiosity or affection can lead to a bite that owners describe as coming from nowhere.

Cats groom to regulate temperature and comfort, but stress-induced over-grooming — sometimes called psychogenic alopecia — can cause bald patches, skin irritation, or lesions. It often targets the belly, inner legs, or base of the tail. Because cats tend to groom privately, owners may only notice hair loss rather than the grooming itself. This is one reason the body language signals cats use deserve dedicated attention.

Piloerection — the involuntary raising of fur along the spine and shoulders — is commonly associated with aggression, but it can occur during fear or heightened arousal with no aggressive intent at all. A dog with raised hackles who is also showing a tucked tail, lowered head, and avoidance is frightened, not threatening. Treating a fearful dog as aggressive — or dismissing raised hackles as unimportant — can worsen the situation.

A pet that suddenly retreats under the bed, behind furniture, or into unusual spaces is communicating a need for distance. In cats, this is especially common after household changes — new people, new pets, or rearranged furniture. In dogs, social withdrawal can indicate stress, illness, or both. Forcing interaction with a hiding pet compounds the stress. Instead, allow retreat and monitor for persistence — a sign that warrants a veterinary check. See also the overlooked signs of anxiety in pets for related patterns.

House soiling that appears suddenly in a previously reliable pet is one of the most misunderstood stress signs. Owners often interpret it as spite or regression, but pets don't eliminate inappropriately out of revenge — they do so because of anxiety, medical issues, or both. New locations, schedule disruptions, a new baby, or another pet can all trigger this response. Always rule out a urinary or gastrointestinal medical cause before assuming a behavioral one.