I think it is because it is scared. I am not exactly sure. I have a cat and I have seen it do it several times, usually after it saw something that scares her.
If your cat growls or does a funny noise when it sees another cat that it has never seen, then he is defending his territory or aggressing the other cat.
Cats poof out there tails because the are scared and there trying to look big
sure...
Cats generally fluff up their tails when they are in a confrontation situation with another cat. You may also notice the fur all over their body fluffing up too. They do this to in an attempt to make themselves look bigger and more dominant - and ready for battle! When the cat is ready to fight you will notice his bristled tail suddenly arching and he may start to growl and appear pretty ferocious. Cats do sometimes fluff up their tail when they are in a playful mood too, but it is quite easy to distinguish between an aggressive fluffed up tail and a playful one by observing the cat's general demeanour, body language and environment.
the cats tail is shorter then a kangaroo's tail
A cats tail is in fact an extension of its spine...thats why.
a tail bone
Check her for fleas, they tend to congregate around the base of the cats tail.
I think so because when i pet my cats tail it moves it towards me.
There are several different reasons why a cat fluffs up his tail. When a cat is in a confrontation situation, he will fluff up his tail - and the fur on his entire body also. What he is in fact doing is trying to make himself look "bigger" in front of his opponent. If a cat's tail is lowered but fluffed up and he is adopting a crouched kind of position, this generally indicates that he is frightened of his opponent and does not want to enter into any kind of confrontation. Sometimes when a cat is in a playful mood he will fluff up his tail, but in this instance you will notice the tail is in an upright position and he generally will not give the appearance of being frightened.
Yes a cats tail is vascular.
if a cats tail is wagging (like a dog wags its tail when its happy) ten it HATES whatever is happening at that moment (this douse not count if the cats tail is only up but not wagging). so, if a catstail is still, it is calm. basicly, tail shaking, ALERT! tail still, calm.
Cats have one tail only!!!
They usually pee with their tail up. Female cats can also spray to mark territory as males do.