Why is my cat aggressive and irritable from a bacterial infection?

I would be concerned about possibly a deep bacterial or fungal infection or an autoimmune disease. It would be best if Sebastian was examined by a vet. The vet may need to do a culture or biopsy to make a diagnosis so that he can get appropriate treatment.

Hi there and thank you for using Petco Pet Education Center, formerly Petcoach to address your concern. I would agree with the veterinarian that the blood work does not look concerning at this time. If his appetite has decreased with antibiotics, I would recommend discontinuing the antibiotics and seeing how his appetite improves. If he continues to be inappetant or is lethargic, I would have the veterinarian recheck him to ensure everything is ok. If he continues to be itchy, I would recommend using a topical shampoo such as Douxo PS shampoo which can be found online quite easily and bathe twice weekly until resolved. I would also recommend using Essential 6 spot on by Dermoscent, which can also be found online. If he continues to be itchy, it may be time to consider switching to a different food or even consider seeing a veterinary dermatologist. I hope this helps! Please let me know if you have any other questions or concerns and I would be more than happy to help you further!

If Jamie has a fever he should be seen by a vet ASAP and not be told to wait. I would try to find another veterinarian that will see him ASAP especially if he is no longer eating and has signs of a bacterial infection. Not eating or drinking can severely dehydrate a cat as well as lead to liver problems, so seeking veterinary care in person immediately is needed.

Okie is gorgeous! Having a physical exam and screening bloodwork and a fecal exam and urinalysis to rule out a medical cause for his crankiness such as an ear infection, diabetes, kidney/liver issues, hyperthyroidism etc. would he best. Using a Feliway mulicat calming pheromone plug -in several rooms in your home along with daily VetriScience Composure chews or oral liquid may help significantly with stress related aggression /inappetance. Both of these products are available without a prescription on chewy.com and PetCo.com. Good luck!

It is quite possible she has developed a fever, most likely from an underlying infection such as a urinary tract infection which are very common in diabetics. I recommend a full health check as soon as possible; taking a fresh urine sample with you wold be very helpful

Poor guy. I would have him re-evaluated in this case. It sounds like he may need another round of antibiotics or the same antibiotic given for a slightly longer period of time. It is tough sometimes with kitties with URI's, because without culture we are hoping that our broad spectrum antibiotic will clear up the infection entirely. You also have the option of asking for your vet to do a culture, so that we know exactly which antibiotic will clear things up for Cairo. Your other cats immune system is likely better than Cario's, which is why he/she isn't affected. I would also consider keeping Cairo on anti-viral supplements (Lysine powder) long term to help boost his immune system to hopefully decrease the amount of infections in the future. You can find Lysine at any pet store or online retailer. Best wishes with your pet Cario and I hope that he feels better soon! Take care.

I'm glad to see that Pippin has been neutered because this eliminates that possibility of hormone-fueled behavioral changes and aggression. Behavioral changes in cats can occur at any point in time, and could be related to anxiety or stressful situations (even rearranging furniture or introducing new people to the home can be stressful to cats). Without a lot more information and observing Pippin's behaviors, I can't precisely tell you why these changes are occurring. It may be best to consult a veterinary behaviorist in your home so that they can observe everything firsthand. You can also try using calming pheromone collars or diffusers (Feliway is one example), and discussing the use of anxiety medication with Pippin's vet. I hope that all goes well!