A sudden change in behavior is information. Pets often hide pain or illness, so a new habit can be the first sign that something is off.
Changes worth noticing
- Hiding more, or seeking much more attention than usual
- Growling, hissing or snapping when touched
- Toilet accidents in a pet who was reliably trained, or a cat avoiding the litter box
- Restlessness at night, pacing, or trouble settling
- Licking or chewing one spot over and over
A good first step: rule out pain or illness
Many behavior problems have a medical cause, from dental pain to urinary problems to arthritis. A vet visit is the right place to start, especially when the change is sudden.
Stress and routine
Moves, new people or pets, building work or a change in schedule can unsettle pets. Keeping meals, walks and quiet time predictable helps, and so does a safe retreat they can choose.
Getting help
After a vet check, a veterinary behaviorist or a certified trainer can help with fear, anxiety or aggression. Please don't punish fear-based behavior — it usually makes it worse.
This is general information, not veterinary advice.
