I moved in2 a new house and in certain spots of the housemy cats tail goes str8 up and shakes as if hes scared

Answer 1

I agree with shrdu, It sure sounds like you're describing typical spraying behavior.

But here's the deal; a neutered male OR female can produce some kind of stinky spray! You might not be able to smell it at first, but you will later on.

To stop the spraying try this: Get a blacklight (very cheap, you can just use the bulb in a small lamp you can carry around.) In the dark, go over the room with the blacklight. Urine and spray will glow under it. Once you've located the urine spots you'll need to get rid of them, or the spraying will continue.

There are reputable commercial enzyme products available, such as Nature's Miracle, that do a pretty good job if you follow the instructions exactly. They are pricey in my opinion, but if money's no object go for it! Buy the gallon size, you'll probably need more than one application if the spray is old.

My "home" cure for any cat urine cleaning is undiluted white vinegar. Liberally wipe down walls and soak carpet or floors with it. If there is carpeting, it will have to soak all the way down to the padding. It has to dry naturally in order for it to work. Don't worry about the odor. When the vinegar is completely dry, it has no smell at all.

Whichever method, you'll have to over the room with the black light again to make sure you've got it all cleaned up.

Good luck!

Answer 2

Is he backed up in front of anyhting? He's attempting to spray the item if he is. It's not fear, he's trying to mark territory. If I were you I'd really discourage this fast because once he figures out how to get the spray going, you're going to have a very hard time stopping this behavior.

Answer 3

He's probably trying to spray to mark his territory.
If he's been neutered he probably won't spray but he still has the urge to do so to mark "his" new territory.
He may smell another cat at the spots he chooses and he's telling that other cat "this is my space now".