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Aggression in Cats

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Aggression in cats is usually defensive and is related to self-protection. This is not offensive aggression (although some cats will attack offensively, this is not common). When cornered, a frightened cat will nearly always take aggressive action.

During socialization, a kitten learns to relate to and trust humans. This trust must be strong enough to overcome the natural fear and avoidance behavior seen in cats who grow up in the wild. Cats who miss the period of primary socialization at 3 to 9 weeks of age may never make a good adjustment and will always retain some anxiety when confronted by unfamiliar people.

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Many cases of unexplained aggression are brought on by environmental stress, leading to heightened fear. A distressed cat may suddenly attack another cat or a person who is nearby, even though that person played no part in causing the upset. A cat who has just been in a fight may accept handling by one person, yet scratch and bite another who approaches too closely. This is known as displaced aggression.

Some cats, when they are rubbed anywhere on the belly or along the back near the tail, will turn suddenly and scratch or bite. These cats are saying “no” to petting. Some cats like to be petted; others do not. Some cats will accept petting for a while, and then decide they have had enough. An outright display of aggression is almost always preceded by a signal-such as ears back, lashing tail, twitching skin, whiskers coming forward, or a vocalization-that gives you enough time to stop petting before the cat strikes.

Cats who develop a thyroid problem often become aggressive. Hunger and physical stresses may induce irritable behavior. Pain can also cause aggression. A cat with hip dysplasia may lash out if the hip area is petted. Always have a thorough physical examination and blood work done on an aggressive cat, especially if the aggression represents a change in behavior.

Use startle techniques, such as a whistle, a puff of compressed air, or a small, soft object thrown across the cat’s field of vision (not at the cat), to interrupt aggressive behavior.

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