"Contacts" would normally mean "People you know". On a mobile phone, for example, you would have a list of people whose telephone numbers and addresses are stored in the phone memory and these would be your "contacts" so I guess this might be some software that lets you track where your friends and your pets are? It sounds like a very strange program though, unless your dogs roam freely and have GPS trackers in their collars!
The other possibility (slighly obscure) is that I have heard "dogs" used as slang for "friends" in rap music, so it might be using it in that way: "Track your contacts and your friends" but that seems unlikely. What's the program? Maybe if I could see it in context it would make more sense.