Introducing a new cat to your dog
Cats and dogs can play well together, but it depends on their individual personalities as to whether there will be a match made in heaven or a cat and dog war!
Initially, ensure both parties are safe from the other. They should be kept separate until your cat has settled in and then gradually introduced under strict supervision. Ideally bring your dog in when your cat is relaxed and sitting in a safe place, such as high up on its scratching post. Ensure your dog does not jump up to get to your cat.
To better control your dog (especially large ones), it is a good idea to bring them in on a lead. Reward any calm and friendly behaviour in your dog. Don't leave your cat and dog together unsupervised.