My cat is sprinting, hissing, eating grass. Is she sick or in pain?

Poor Nermal! Some cats do act aggressive when they don't feel well. You could try leaving her alone for the next few hours to see if she calms down and begins acting normal again once her stomach has settled. If there is no improvement in the next 24 hours, or if she continues to vomit through the day or develops any other symptoms, it would be best to take her to the vet for an exam. He/she can do some diagnostic testing if needed to help determine the problem and get her started on appropriate treatment.

If this is new behavior she may be painful, from an abscess or fight wound. When cats get sick their behavior changes and often with pain or a fever they do not want to eat much. Because the fur is thick and these are often puncture wounds they are hard to find. I recommend a veterinary exam to check her temperature and feel her all over to see the reason she is painful. Abscesses are pockets of puss and they need to be opened up and drained to get rid of the infection. It's often hard to know when cats are sick so when you do see changes in eating and comfort it's time to take them in for treatment. Thanks for using Petco Pet Education Center, formerly Petcoach to help you care for Nadia.

Some cats may eat grass to settle an upset stomach or to self induce vomiting. Cats will also eat grass due to boredom or simply because it tastes good. As long as Kitty is behaving normally, there is likely no cause for concern.

It could be Noelle is sick. I would keep a close eye on her tonight and if she still acting this way in the morning, have her seen by a vet. Rush her into an ER vet right away if she starts having trouble breathing.

It is normal for cats and dogs to chew plants occasionally but If this is new for Honey and started suddenly, it could indicate nausea. Watch for other signs including loss of appetite, vomiting, or weight loss. If you see any of these, head to your vet as soon as possible. Of course also remember that it’s getting warm out and that this could be related to increase shedding and hairballs. Best of luck to you and Honey!

Vomiting and increased vocalizations can sometimes indicate pain or distress. This could be due to GI upset, underlying illness, etc. If the symptoms continue, worsen, or you see additional issues such as increased vomiting, attempting to urinate or defecate but can't, loss of appetite, etc, then it would be best to seek veterinary care ASAP to find the underlying issue.

It sounds like Rosalie may be in pain. If this is a new behavior and if she continues to eat and drink well, it may be OK to watch her for a day to see if the signs resolve. However, if she does not improve or if she stops eating and drinking, becomes lethargic or starts vomiting or having diarrhea, you should get her to a veterinarian immediately.