I had to put my beagle mix down, he was old and could barely walk anymore, and I'm looking to get a new dog. I really want a Doberman, but can't get one at the moment due to my present housing situation. I'm looking for a medium sized dog but it seems like every dog I do research on is either really small or huge. I'm looking for a dog that gets around 15"-20" and 30-50 lbs., is at least somewhat easy to train, is active enough to take jogging/hiking, makes a decent watchdog, and gets along with kids and other dogs. About the only thing I can come up with is one of the larger terriers or a terrier cross, does anybody have any suggestions?