I'm a dog trainer, and I have been working with a family that adopted a 2-year-old dog from a shelter not too long ago. The dog is very well-behaved and is responding well to training, but the family tells me that they have not felt that the dog is attaching to them. The dog doesn't seem to want to be pet or cuddled, and doesn't particularly want to play with them (he does, however, play alone). My clients are experienced pet-owners, who have adopted dogs before. I was wondering if anyone has any tips I can give the family to help with the attachment process? Thanks!