Why Do Cats Hiss At New Cats. It’s important to notice the warning signs before they start hissing to better pinpoint why your cat is resorting to that behavior. On the surface, this behavior might make it seem like your cat is being hot and cold.
Cats hiss as a warning, as a way of telling whoever is bothering them to back away. Even a cat you’ve had for a long time may feel threatened by the new vacuum cleaner. Why do cats suddenly hiss after acting like they wanted to be petted?
Why cats hiss at each other.
Cats tend to growl or hiss when they feel threatened or fearful of certain people. Cats hiss to let you know something has made them unhappy. Unfamiliar objects in the house that move strangely may trigger your cat to hiss or be fearful. Felines will hiss as a warning, making humans and other animals aware that they should stay away from them.