How to stop male cat aggression after new puppy and house move?

Here is an article on introducing new cats to the home. https://www.petcoach.co/article/5-steps-to-introducing-your-cat-to-a-new-feline/ In addition, I recommend a calming pheromone such as Feliway that can help with anxiety. It is available as a plug-in room diffuser for large areas, and as a spray for small areas like a mat or bed. https://www.drsfostersmith.com/product/prod_display.cfm?pcatid=8906 https://www.drsfostersmith.com/product/prod_display.cfm?pcatid=37241 Another product I like is Composure, which is available as a little treat. https://www.petco.com/shop/en/petcostore/product/vetri-science-composure-feline-bite-sized-chews I hope this helps. Thanks for using PetCoach.

Moving can be very stressful on any species. Cats will sometimes display signs of mis-directed aggression when they are stressed. I would recommend getting Feliway pheromones started asap. These come as plug in diffusers or even collars if the cats will tolerate them. They release calming hormones into the air that people won't smell, but do help relax agitate pets. Give the cats a safe place to retreat to - a room or hideout where they can get away from each other, the dog and people. If possible try to have items from their last home there (a bed or toys). Try to feed the same food, switching it over gradually. I would recommend having several litter boxes in different areas of the house while they are acclimating. If the fights are serious enough you may need to separate the cats into separate areas of the house and gradually reintroduce them to each other. If the behaviours continue or worsen, I would recommend consulting with their veterinarian. There are medications that can help in conjunction with training to decrease behavior problems. The following website has some great information about cat behavior by one of best behavior veterinarians there ever was. You may want to search for articles on aggression and anxiety in cats for some more ideas. https://drsophiayin.com/resources/cat_behavior/

Poor Lumi! It sounds like he is a little stressed out. Visit the following link for more information on how to introduce a dog to your cat https://indoorpet.osu.edu/cats/felinelifestressors/new-pets Visit http://www.humanesociety.org/animals/cats/tips/kitten_play.html for information on how to get Lumi to play gently. Also make sure Lumi has a home environment that promotes enrichment and reduces stress. Cats need at least one litterbox per cat plus one extra to help reduce stress associated with the litterbox. They should be placed in separate rooms, away from the food and water bowls, must be scooped at least daily (preferably multiple times a day)and washed out at least weekly with a mild soap, followed by thorough rinsing. Cats need a lot of space to explore, but keeping them indoors is much safer than letting them outside, due to the risk of injury from cars, wildlife, other animals, etc. The key is providing space (particularly vertical space for climbing, such as cat trees, ledges, and the like) inside the home. Visit http://www.veterinarypartner.com/Content.plx?P=T&C=33&S=2 and https://indoorpet.osu.edu// for tips on stress reduction. Also look into Feliway, a synthetic pheromone that is available in a diffuser and spray form that promotes calm feelings in cats http://www.feliway.com. I recommend speaking to your veterinarian about having Lumi neutered as soon as possible, as this can help reduce behaviours such as humping, urine marking, aggression, territorial behaviour and roaming away from home and may help him to get along with your new pup.

Unfortunately the new cat is likely causing stress and this is a common feeling reaction to stress. She may not want to go outside as long as that other cat is around. It may be difficult to keep the other cat out of your area unless you want to purchase or build a fence. There are fences available that have curvature to the top that make it difficult for a cat to climb over. There are some things you can do at home that can help to manage her stress. Set aside 30 minutes a day for a vigorous play. Use a pheromone diffuser. There is a special prescription food made by Royal Canin called calm which may help. Use food puzzles. Give environmental enrichment. Lastly, your veterinarian has medications which can help as well. Many cats require a combination of therapies. Best of luck.

Aggression is complicated and I recommend to have him neutered and to work with a behaviorist. If this appear more play related, sometimes this behavior can be related to boredom, anxiety or a desire to play roughly. There are a few things you can do which may help. Try enriching his 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 and/or switch the food to Royal Canin Calm. During the play time, if he seems like he wants to play rough, try to encourage him to wrestle with a stuffed animal. You may also try feeding him from a food puzzle and/or hiding food around the house for him to find. Most cats response best to combination therapy. The veterinarian can also prescribe medications which can help with behavior. 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/ I hope this helps and please feel free to post any additional questions.

There are some things you can do which may help. You will need to take these actions towards both cats. First, try to meet the instinctual needs. Here is a great article about cat's instinctual needs: https://www.petcoach.co/article/why-every-cat-needs-a-place-to-climb/ Make sure to have separate litter boxes and food/water stations to decrease competition. These separate stations need to be in different rooms. Using a Feliway diffuser, setting aside 30 minutes a day for vigorous play for both cats or switching the food to Royal Canin Calm may help. The veterinarian can also prescribe medications which can help with stress management. I hope this helps and please feel free to post any additional questions.

This may be difficult to correct but it generally can be done. Continue using the diffuser. Try switching litter boxes, beds, and rubbing each cat with the same towel to try to get them to smell like each other. Here are some links which may be helpful: https://www.petcoach.co/article/7-ways-to-calm-an-anxious-cat/ https://www.petcoach.co/article/bringing-home-a-new-cat-or-kitten/ Here is a great article about cat's instinctual needs: https://www.petcoach.co/article/why-every-cat-needs-a-place-to-climb/ Setting aside 30 minutes a day for vigorous play for both cats or switching the food to Royal Canin Calm may help. The veterinarian can also prescribe medications which can help with aggression. I hope this helps and please feel free to post any additional questions.