DH and I were watching the boys last night - Jax is now 14 1/2 months, Kane will be 6 months old tomorrow - and we were speculating on a habit they have. When they start quieting down in the evenings, they like to lay close to each other. They'd probably prefer to sleep together if we could find a crate big enough to accomodate them both. Anyhow, after they've had their evening romp and are just hanging out together, one or the other will start licking the sides of his brothers mouth. It does not take place right after they've eaten. It's kinda like the cats grooming each other. A soothing activity for both. We know it means something in dog language, but can't quite figure it out.