I agree with you he was probably taken too young.Mojo(our rescue lab mix) we got at 7 weeks and he had allready gone from South Carolina to a rescue in Pennsilvania and we were in Md. He bonded to Dakota right away but we had to spend alot of time with him and he hated to be alone.He stilll cries when my son leaves and sometimes when we leave.He has really bonded to my son-his Dad-he took lots of attention but we did that with treats and training too, so he worked for things as well.I think it is really hard for them to be taken young.He has adjusted really well and though he still cries a little it stops realatively quickly after my son leaves if we are there or after everyone leaves.He does cry when he gets home from school if he doesn't give him attention right away.Hold on you will get past this point.He has been through alot at such a young age.
Laurie