Puppies are 6 weeks old and have had their first shots. There are 4 female puppies, 1 blue merle and 3 black with some white. One of the females has brindle markings on her legs. There are also 2 male puppies, 1 blue merle and 1 black. My family and I are fostering these puppies and we don't have pictures of their parents. The mother was a Border Collie and ...