If you are adopting an adult cat, you should be aware that it will take time for him to feel secure in his new environment. Be patient as he will come around eventually and you can reap the rewards of having an adult cat, and you will have bypassed most of the training.
If you have acquired an adult cat, transport him home in a carrier, where he will be safe and secure. Do not be tempted to let him loose in the car. He will most likely be fearful and could scratch or bite you while he is trying to hide.
Once home, do not turn him loose in the house. Your primary concern in to ensure that he has a safe refuge away from people and other pets. Unlike a kitten, he will not cry for his siblings, but he will probably seek out a hiding place in his room.
Provide him with water and food dishes and a litter pan in his room. If he hides under a piece of furniture, place a cat bed or small blanket there for his comfort. He will not use a pillow or cat bed in the open until he feels secure.
Cats do not like changes. They especially dislike moving to a new house or being confronted with any new furniture in their old one. So your adult cat has a double burden to contend with because he has lost both his old home and his old furnishing.
There is no yardstick by which you can measure how long it will take for your cat to feel comfortable. Some will come around within a few days and others may take weeks or even months. Patience is the key to helping him adjust.
Avoid talking loudly and do not make sudden movements. Cats dislike noise and raised voices almost as much as they dislike a new house. Do not pick him up against his will and do not force him to come out of hiding. This will frighten him and he may not be able to trust you again.
As long as he is easting food, drinking water and using his litter pan, you have won half the battle. If he is too afraid to come to you, try sitting quietly on the floor and talking softly to him.
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