Do you have any dog parks nearby? That'll cure you pups. They will come home exhausted and wanting private time.

You may want to try to teach the pups a slew of tricks ..... a few new toys.

That's all I have to offer. The problem sounds so cute though. Awwww. They miss their buddies.

Also, I take my dog to a day care once a week, so that she stays socialized and tired. It works.

Good luck. Keep us posted.