Cats can be very empathetic. They can be sensitive to changes in the household, when people are stressed, or there is a change in housemates. Furthermore if you cat has a urinary tract infection the smell and contents of the urine may have changed. This may change the overall scent of your cat. The other cat may be picking up on the change in behavior or change in scent and reacting to new or "different" by hissing. This should resolve when the urinary tract infection is clear. If it does not and the hissing continues examine the environment for other changes or things that may be stressing your cats.
This is so odd... My tiny kitty was just diagnosed with UTI and her sister (and constant companion) now wont let her near! Every time she comes around she gets hissed at. So sad. They sleep together every night and groom each other regularly... Her sister can totally smell something is wrong and I only pray this behavior goes away once the antibiotics kick in!
I have two cats and one is currently sick. Ordinarily they are very close, lying together, licking each other etc. The young one has been sick the last two days and the other one has begun hissing. The vet said part of the virus is affecting the kidney of the sick one and I think kidneys link to the urinary function? Its very sad because the young one dotes on the older one and is very sick, and now, is being hissed at too by his beloved.... Life! Not so sweet sometimes.
It is actually fairly common for this to happen in a multicat household when one develops a UTI. I've worked as a veterinary technician for four years, and we've had many owners complain about it occurring, even with litter mates. Most likely, it happens because the infected cat's scent changes, both from the UTI itself and from the antibiotics. Once the course of meds has finished and the infection is cleared up, things should go back to normal. It might take an extra week or so for them to get used to one another again, but once your cat is healthy again his buddy will forget that he smelled different for a while.
This has happened two separate times in our house when one of our cats had a urinary tract infection. Our cats have lived in the same house for 12 years and get along fine. But, when one of them has been sick, the other one senses it I guess and starts hissing at the other. It goes away when our sick cat feels better. ???
Haha...no...your question is humorous, was it intended to be humorous? If it wasn't then I apologize..anyways, a cat wouldn't hiss at another if the other sick. It would only hiss if it senses that the other poses a threat or danger.
I don't see why this is humorous?? Weird....anyhow my cat just started hissing a my other cat (they have lived together for a year) today out of the blue. They were best buds until today so I'm wondering if she is sick too..my poor kitty
Yes they will hiss no matter what until they get used to each other