Why is my cat aggressive, making strange noises, and standing tall?

It may be a hormonal problem so the first thing you should do is have him neutered. Your cat may also be redirected his aggression on to you. Redirected aggression occurs when a cat experiences something that is over-stimulating or highly arousing or something that causes fear and the cat redirects their frustration, aggression onto whoever is closest. Sometimes it can be another cat or animal outside that is causing the problem. You could also try a Feliway diffuser/spray and/or Soliquin chews and see if that helps.

A sudden change in behavior may have, at its root, injury or infection. Ideally, Rostom should be physically examined by your veterinarian to diagnose and treat any medical causes for his sudden aggression. Neutering him should be strongly considered as testosterone can be a driving force behind aggressive behaviors. Once medical causes have been ruled out, you can address behavioral concerns such as stress or anxiety. A pheromone product, such as Feliway Spray or plug in diffusers, may help decrease any aggression or anxiety. A gradual desensitization to loud noises can also be done to lessen Rostom's response to them.

That is unusual behavior so he may be irritable from being in pain. Outdoor unneutered male cats often fight and he may have an injury you can’t see which is painful. I recommend confining him to another room until he calms down so no one else gets injured, and see if he is eating normally. If this behavior continues please take him in for an exam to check for a wound or area of pain. In addition I would consider neutering him also. Neutered male cats seldom fight, they are more docile and less aggressive. Thanks for using Petco Pet Education Center, formerly Petcoach to help you care for Timmy.

I'm glad to hear that Rosie overall seems to be fairly normal despite her vocalizations. Changes in vocalization can occur to a number of reasons, including endocrine/metabolic diseases (such as hyperthyroidism), cognitive dysfunction, hypertension (high blood pressure), neurologic conditions or as a sign of pain. If Rosie's vocalization continues, consider taking her back to the vet for blood tests and blood pressure measurement to try to rule out other underlying issues. I hope that all goes well!

From the behaviours you are describing it sounds very likely linked to the fact that Manny isn't neutered yet. He is reaching sexual maturity and the hormones in his body are alerting his behaviour. After he is neutered it will take a little time but these behaviours should diminish. In the meantime try a few of these re direction and distraction techniques: Feliway diffuser Interactive games like fetch and laser chase Food puzzles

Hello, These sound like normal behaviors for an intact male cat- more independence, roaming, territory marking, and calling for a mate at night. You could have him neutered to overall reduce these behaviors if you find them unfavorable.

That is very unusual and sounds scary! There could be a few reasons for this behavior. Sometimes there could be pain or a medical condition causing a change in behavior. Since Oscar can't talk and tell you what is happening, I recommend to have him examined by the veterinarian to be safe. Sometimes this behavior is related to the stress of seeing another cat outside. For some cats, this causes frustration and they can then exhibit bullying type behavior to other pets or people within the house. If the veterinarian thinks this is behavioral, there are a few things you can do. Try enriching the environment. Here is a great article about cat's instinctual needs: https://www.petcoach.co/article/why-every-cat-needs-a-place-to-climb/ Use a Feliway diffuser, set aside 30 minutes a day for vigorous play (really get him moving) and/or switch the food to Royal Canin Calm. If he is the only cat in the household, you may try feeding him out of a food puzzle. Hide food for him to find. Do not use these last two mentioned options if you have other cats. Provide a stand or resting place by a window so he can look outside. You may also try clicker training him for positive behavior. Here is a link about training cats: https://www.petcoach.co/article/can-i-train-my-cat/ Wash all windows and doorway exteriors where a cat may be spraying outside. Try to drive out the cat if possible. You may also need to block the window where you think Oscar may be viewing the cat most frequently. Most cats response best to combination therapy. The veterinarian can also prescribe medications which can help with aggression/stress. I hope this helps and please feel free to post any additional questions.