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How to maintain social skills in older dogs
Take your dog to the dog park.
A great way to socialize your older dog is to take them to the dog park. At the dog park, they will have an opportunity to interact with other dogs and people.
They also can run around and play for their exercise. If you are worried your dog won't feel comfortable around the dogs at first, consider keeping them on a leash until they get used to the people and dogs.