| Trouble with dogs getting along
First, some background info. We thought we'd lost our puppy. She got loose without our knowledge and a neighbor saw someone stop and put her in their car and drive off. We figured she was gone for good. After some thought we decided to go to the SPCA and rescue one. Well, we rescued 2! Later that day I came home to find our puppy sitting on our porch. I guess the puppy taker grew a conscience. So anyways, we now have 3 dogs, all girls.
We got a 5 month old Terrier/Beagle, a 1 year old Cattle Dog/Welsh Corgi, and a 1.5 year old German shepherd mixed with something but we don't know what. Okay, the "Teagle" and the German get along great despite the size difference. They play for hours. Both of them try to play with the Cattle dog, but the cattle dog is more of a loner and will occasionally snap or attack them. We were told that she is used to living with kids, cats, and dogs. But we're not so sure. What can we do to get her used to the other dogs? Do we just wait it out and hope they all become friends? | 
