Cat aggressive & has one large pupil after vaccines. Normal?

What Lucifer is experiencing may be symptoms of an allergic reaction. Other medications (such as topical flea/tick treatments) can sometimes cause this type of a reaction as well. Because this behavior is unusual, it would be a good idea to go in for a recheck exam with your veterinarian just to be safe.

This is called anisocoria, and it is a medical emergency when it occurs suddenly. Munna could be experiencing an abnormal reaction to the vaccines if this happened after he received them yesterday. I would have him seen by a vet immediately.

Horner's syndrome can result due to an ear cleaning if there was damage done to the ear during the cleaning, but it can also result from an ear infection, blunt force trauma, and disease of the eye among other things. If Munna had Horner's syndrome, you would see other symptoms such as drooping of the eyelid of the affected side, the third eyelid would be raised and appear red, and the affected eye may appear sunken. Moon should see a vet for this immediately. It's very serious when one eye suddenly is dilated while the other is not. The vet can diagnose what is causing this to occur, and can treat him for it. Please take him into a vet now.

Aw, I'm sorry to see that Cat isn't feeling so great! It is highly unlikely that the vaccine actually caused this condition to occur. Vaccines can certainly cause immunosuppression, but I do not believe that this is the direct cause of vaccination. Vaccine reactions almost always occur within minutes to hours after the shot is received. It is likely that your kitty has come down with an upper respiratory infection that will require treatment. Antibiotics, ophthalmic medication, and immunosupportive care will all be required. If she has a fever, she may also require some anti-inflammatory medication and fluids. I would get her to the vet some time today, or tomorrow at the latest for care. Hope this helps.

Hi. Poor Sunny. I know it may seem abnormal, but it is common and normal to have a patient be quiet, lethargic, hide, skip a meal, and ecen be sore and whiny after a vaccine. Some vaccines affect patients more then others. I would not worry unless Sunny starts vlmiting, having excessive lethargy, hives, swelling, or trouble breathing. I would monitor and call your veterinarian if any further signs occur.

Hi, Sweet Ginger is looking quite sleepy in the pic. Signs you could still see as a reaction to the cat vaccine are : lethargy (already showing), fever, loss of appetite, vomiting ,diarrhea, Swelling (a lump) and/ redness around the injection site. These signs are short lived around 24-48 hours post vaccination. If you do notice a small lump at the site of the injection that can appears also several days after just monitor it should reduce and disappear in the next few weeks. Hope this helps

It sounds like Lilly may have had a delayed hypersensitivity reaction to one of her vaccinations. You should call your vet and mention it so that in the future, they can give only vaccine at a time and/or keep her at the hospital for the day when she is getting vaccinated so they can watch her. As long as she is back to normal now she should be fine. If she still doesn't seem right to you tomorrow you should get her back to your vet for a recheck exam. Hope this helps. Best wishes.