If you want a breeder, that’s your right. However, please don’t go with a classified ad breeder. Responsible breeders don’t advertise in newspapers. Backyard breeders, breeders out to make a quick buck, people who had “whoops” litters, and people who bred Fluffy because she is just so cute(!!!) advertise in the classifieds. If you need more information on how to find a ressponsible breeder, I can share several links with you, or there is a thread on the top of the Pets Board on that very subject.
Also, keep in mind that there are lots of puppies in shelters, including purebreds. Your first step should be to research breeds you’re interested in to make sure they fit with your lifestyle; you don’t want to end up with a border collie if you’re couch potatoes, for example, and of course you’ll want a breed that’s good with other animals and won’t see your cat as a snack. Your second stop should be petfinder.com to see if there is a breed rescue in your area, or any puppies of that breed in shelters near you. Alternatively, if you’re looking for a breeder, your next stop should be the local breed club website for the breed you’re interested in. Their website should have information, as well as a list of breeders in your area.
Anyway, your cat may be afraid of the dog at first, but generally speaking, once he gains confidence, he will put the puppy in its place. Our cats have made sure the dogs in their life knew who was boss! A slow introduction is best. Keeping them seperated by a door or sturdy baby gate for a few days is good, if possible. This will allow them to smell each other, (and in the case of a baby gate, see each other), without allowing contact. If you use a baby gate, it will also allow the cat to seek out contact if he is interested, and get away if he gets scared.
The number one thing is to give it time. Keep in mind that there is a chance the cat won’t adjust. Are you prepared to return the puppy if the cat is overly stressed by the puppy, (they probably won’t be best friends overnight, if ever, but you don’t want your cat to feel terrorized for the rest of his life) and/or to keep them separate for the rest of their lives? This is also another reason you’ll want a responsible breeder…if you go with any old breeder in the newpaper, you’re stuck once you’ve paid the purchase price; a responsible breeder will take the puppy back at any point in its life should the need arise.
One more thing: be sure to provide plenty of places, (like a cat tower and/or cat shelves) that your cat can go to escape if need be. The higher the better. It will allow him a break from the puppy, if he needs one, and allow him to observe the room at an elevate level, which can also increase kitty confidence.