My older kitten is pouncing on the new one. How do I introduce them?

Separate Lilly from the kitten for a few days. Gradually reintroduce them. Start with a closed door between them so they can hear and smell each other. Progress to seeing each other but without physical contact. Once they are acclimated, try short periods of supervised contact. Use a pheromone prodcut such as Feliway Spray or the plug in diffuser to decrease any anxiety or aggression.

Do it gradually. First, allow them to hear and smell one another but not see each other. This is best accomplished by keeping her in a small, closed room. Once your male has accepted her presence, have them see one another form a distance for ever increasing periods of time. The next step would be to place her in a closed carrier in the same room as your male. The final step step would be a supervised physical introduction. Use leashes on both for safety. The entire process may take days to weeks. A pheromone product, such as Feliway Spray or plug in diffusers, may decrease any anxiety or aggression. Ideally, you will also need to provide a litterbox for each cat plus an additional box in a neutral area. Extra bowls, toys and beds should also be provided to prevent resource protection.

When you have that many cats, you are bound to have conflict at some point. They may single him out due to his age or size. Separate him for a week or two, then gradually reintroduce him. First, allow the others to hear and smell him but not see him. Progress to sight but without physical contact. Before a physical introduction, place him in a closed carrier in the room with the other cats. Once they have accepted him, you can try a supervised physical introduction. Provide an adequate number of litter boxes (typically one per cat plus an extra). An adequate number of bowls, beds and toys should also be provided to prevent resource protection. A pheromone product, such as Feliway spray or plug in diffusers, may decrease any anxiety in the home.

The Step by Step Process Put other cats away before you bring the new cat home, so that you can take the cat to its room without encountering the other cat(s). Then close the door securely and go visit your other cats. They will smell the new cat on you. Give them treats to positively reinforce this experience. A few days later, in order to further acclimate the cats with each other’s scent, it is good to exchange the new cat's bedding with that of the resident cat. The next step is to rotate rooms daily for at least 2-3 days. This allows the new cat explore the rest of the house while the resident cat spends some time in the new cat's room. This will give your resident cats a chance to smell the new cat and rub their own scent on objects. The cats should be fed in each area with wet food twice daily, and it is also good to play with the cats in each area at least twice daily. The practice of setting up a schedule of feeding treats of wet food, as well as a playtime routine, minimizes anxiety and makes the cats feel more secure. Keep the cats in separate areas for as long as it takes to allow them the chance to become desensitized to the smells and sounds of the cats in the other area. When they all seem particularly relaxed with this process, begin to expose them to the sight of each other. A good way to accomplish this visual introduction is to bring the new cat(s) in a carrier to meet your cats and sniff each other through the carrier wire door. Place the carrier on the floor and allow them to meet this way several times a day for about an hour. Continue these meetings for several days or until they remain calm in each other's presence. If and when the cats are able to stay calm in each other's presence during these meetings, it is time to let the new cat out into the rest of the house for a few minutes. The length of the visits can be increased gradually each day. Depending on the personalities of the cats involved, this process may take a few days or a few months. If it appears that any fighting maybe be close to occurring while you are supervising, put the newcomer back in his/her room and proceed more slowly. If those supervised play times go well, you can begin to allow them to cohabitate in your home. If any aggressive behavior occurs at any time, begin the introduction process again. It is very important to understand that this process can take as little as a few days, to sometimes much longer. It is all dependent on the cats involved. If things don’t go well right away... One of the most important steps to dealing aggressive behavior between cats is to recognize the different types of aggression and understand their underlying causes. A short list and description of some commonly seen aggressive behaviors include: chasing; ambushing; hissing; swatting; and/or biting. If you see these behaviors, seek help from your veterinarian. Most cats get along fine if the introductory process is done correctly. Please seek help from your veterinarian if you feel that things are not progressing well, or if you have other questions.

It does take time for the existing cat to get used to a new addition to the house, and I recommend introducing them slowly to each other. Take the kitten, and put her in her own room with her own food, water, and litter box. Keep the door closed, and for a few days, feed them both treats on other side of door so they associate each other's smell with a good experience. Then let the other cat in the kitten's room while the kitten is in a cat carrier. They can smell each other, but not be in contact. If either becomes upset or show signs of aggression, remove the second cat from the room, and try again later. Praise them when they interact appropriately. When they are interacting well with each other through the carrier, you can let the kitten out of her room, and see how she interacts with the other cat. Praise them when they interact appropriately, and separate them with any sign of aggression or upset. I would get a cat tree with lots of shelves to give the cats vertical space to get away from each other. I would keep the kitten in her room when you go out until they are comfortable with each other.

Good question! You do the introductions slowly, yes. The ideal way is to put the kitten in one room and the other cats in the rest of the house. Once the kitten is cleared by the vet, you will want to put the kitten in the rest of the house and all the other cats in his room. Do this for 30-60 minutes a couple times a day. That way they can get each other's scents. Also, at this stage you will want to feed the cats by the door of the kittens room; feed the kitten on the other side of the door too. So they can smell the kitten and get a reward at the same time. Once that is going well you can use a baby gate to separate them at the door for feeding. After a few days if that is going well (no hissing etc) you can let them all out together. When I say feed them at the door I mean something really good that they will consider a treat like canned cat food, canned chicken or canned tuna. Make it a really pleasurable experience! I also strongly recommend you get some Feliway diffusers. It is "happy cat pheromones" that really works to calm cats down. Use it for at least 2 or 3 months time. Hope this helps. I know it's a long process but it is much better to do it slowly than to cause issues by just throwing him in!

The next step is to rotate rooms daily for at least 2-3 days. This allows the new cat explore the rest of the house while the resident cat spends some time in the new cat's room. This will give your resident cats a chance to smell the new cat and rub their own scent on objects. The cats should be fed in each area with wet food twice daily, and it is also good to play with the cats in each area at least twice daily. The practice of setting up a schedule of feeding treats of wet food, as well as a playtime routine, minimizes anxiety and makes the cats feel more secure. Keep the cats in separate areas for as long as it takes to allow them the chance to become desensitized to the smells and sounds of the cats in the other area. When they all seem particularly relaxed with this process, begin to expose them to the sight of each other. A good way to accomplish this visual introduction is to bring the new cat(s) in a carrier to meet your cats and sniff each other through the carrier wire door. Place the carrier on the floor and allow them to meet this way several times a day for about an hour. Continue these meetings for several days or until they remain calm in each other's presence. If and when the cats are able to stay calm in each other's presence during these meetings, it is time to let the new cat out into the rest of the house for a few minutes. The length of the visits can be increased gradually each day. Depending on the personalities of the cats involved, this process may take a few days or a few months. If it appears that any fighting maybe be close to occurring while you are supervising, put the newcomer back in his/her room and proceed more slowly. If those supervised play times go well, you can begin to allow them to cohabitate in your home. If any aggressive behavior occurs at any time, begin the introduction process again. It is very important to understand that this process can take as little as a few days, to sometimes much longer. It is all dependent on the cats involved. If things don’t go well right away... One of the most important steps to dealing aggressive behavior between cats is to recognize the different types of aggression and understand their underlying causes. A short list and description of some commonly seen aggressive behaviors include: chasing; ambushing; hissing; swatting; and/or biting. If you see these behaviors, seek help from your veterinarian. Most cats get along fine if the introductory process is done correctly. Please seek help from your veterinarian if you feel that things are not progressing well, or if you have other questions.