Are you interested in meeting other dog lovers, getting animal behavior advice, and even how to train your dog? On Meetup.com, you join a wide variety of dog groups, or even start your own, and it is all free. In the search box, type in "dog" to find groups that are focused on dogs, and find get togethers in your local area.
A few months ago, I joined four different groups on Meetup.com, including The Dog Whisperer, and The Humane Society. You can find many meet up groups to get together in your local area for dog activities. I haven't actually attended any events yet, but they keep me posted. At first, I was hesitant to join because I thought they might pressure to attend events, but they don't.
Each group has a forum where you can learn more about dog training, animal welfare, events in your area, etc. They have dog rescue groups, breed specific groups, meet up groups for those who work in animal related fields and more. If you have been interested in meeting nice people, or even volunteering to help stray dogs in your area, this is a great place to network!