How to get my dog to accept a new puppy?

Hello, Is your dog sociable? You can try to see his reactions with other dogs and people you know, let them play together etc. When you have your puppy, it's best if they meet on neutral ground (outside for example) then in your home. Make sure your two dogs each have their personal necessities: they should have a resting area of their own, preferably separated from one another with their bowl, their own toys ... These are precautions to avoid them to start their relationship with tension. But if they get along really well all this will only be unnecessary because they will probably share their beds, toys etc. Sincerely

Thank you for your answer, I haven't made my mind up yet, I was just curious as my dog is getting old and I'm thinking about getting a second dog. I haven't even decided if I would adopt a puppy or get a puppy from a breeder. Beatle is the first Jack Russell I've had, and I love this breed, but I know so many dogs and puppies are looking for good homes. So, yeah... still in discussion

If you choose to get a dog or a puppy, make sure they both like the same things (play in particular). As well, if your dog is getting old, he might not enjoy having an energetic puppy running around him. Or he might, I don't know your dog's personality. But anyway, a good tip would be to bring your dog with you when you go visit shelters or breeders, you will be able to see immediately if there is a good connection between your dog and another.