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5. Pain or Discomfort
Sudden biting—especially from a cat that’s usually calm—can sometimes be a red flag. It might be their way of signaling pain or illness. If your cat starts biting out of nowhere, a visit to the vet is a smart move to rule out any hidden health issues.
6. Territorial Behavior
Cats are famously territorial. If they feel like their space, favorite napping spot, or cherished toy is being invaded, they might bite to assert control. This instinctive behavior is rooted in their wild ancestry, where protecting territory was key to survival.