Because the hissing only lasts a few minutes, my inclination is to stay out of it and let them work it out themselves. However, if one has a new scent on her fur that is making the other react, a bath might solve this problem. (One of mine hisses and growls loudly at the other when he returns from the vet. The hissing will continue for several days until the "vet smell" wears off if I don't give him a bath right away.)

Most likely they got into a fight or had some other random fluke event, and this is something small that will be over in a few days. If not, take them both in for a vet check. Sometimes when a cat is sick or not feeling well, she'll behave differently but only for a short period. Similarly, if the other cat is sick, your hissing kitty may be picking up on that and exhibiting signs of distress. So if the hissing continues for more than a few days, I'd take them to the vet for a check up just to be on the safe side.

And always remember to Catch 'Em Being Good!! When there is no hissing, give them both some praise and a small pet or chin rub, whatever they find pleasing. One of the best ways to combat undesirable behavior is to reward desirable behavior.

Let us know how they're doing!
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PHCurious
Cat Chat Host

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