Once your pets can eat their food calmly right next to the door, conduct meet and greets in a common area of the house. Don't use either animal's sanctuary area. Keep the first few sessions short and calm. Keep the dog on a leash and let the cat come and go as he wishes. Do not restrain either pet in your arms, as injury could result if either pet behaves aggressively. Ask the dog to sit and reward him with small tasty treats for calm behavior. Give your cat treats as well. If either pet demonstrates aggression, calmly distract and redirect them. Toss a toy for the cat to lure him from the room, or call the dog’s name and reward his attention. Return the pets to their confinement areas.