Safety First
First and foremost, if the cat you plan to transition was previously stray, be absolutely sure to have him examined by a veterinarian, and discuss spaying or neutering before bringing him into your home. These cats should first be quarantined (with their own food, water, litter, resting areas and scratching post, etc.) from other pets in your home to avoid the potential spread of disease. This separation also helps acclimate the new cat to your home environment and to using a litter box. Your resident pets are dependent on your judgement and protection, so don't expose them to a new animal all of a sudden!
Prep Your Home
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Make Introductions
Once your cat has been given a clean bill of health and appears to be comfortable in his own quarters, you can SLOWLY introduce him to your other pets. This can be a very stressful time; other pets may feel threatened and your home can become chaotic. Start by feeding your pets on opposite sides of a door or a baby gate. If this goes well, you can increase their exposure to one another little by little during mealtimes. Finally, let them see and smell each other, rub each other's faces if desired, and test the waters with verbalization. Throughout this process, be sure that there are plenty of litter boxes, toys, food and water bowls, etc. so that there is no need to compete. And if any aggressive behavior erupts, be ready to separate the pets and try again another day.
After the animals have been introduced, invite the human members of the house to slowly approach the new cat. If you have young children, supervise all interaction and prohibit any rough petting, tail-pulling or teasing. Cats are independent creatures, so it is best to let them decide when to seek out human attention rather than the reverse. After time, most cats will get cozy with you, each in his own way.
Keep It Interesting
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Ease the Transition
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