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.
discovered in the 1960s, feline leukemia virus is a transmittable RNA
retrovirus that can severely inhibit a cat’s immune system. It is one of the
most commonly diagnosed causes of disease and death in domestic cats.
Because the virus doesn’t always manifest symptoms right away, any new cat
entering a household-and any sick cat-should be tested for FeLV.
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
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
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.
A poorly socialized cat should be allowed to retreat from threatening
situations and not forced to confront the causes of his anxiety. These cats are
often “one person” cats. They make excellent companions but must be watched
carefully around strangers, particularly children.
A frightened cat who resists handling should be left alone until he is
relaxed. Minimize all stimuli that impose stress and elicit fear. One way is to
feed the cat. Sit alongside as the cat eats and speak soothingly. Soon, the cat
will come to you for petting. However, if the cat is too frightened to eat with
you nearby, leave him alone for meals, because not eating can lead to serious