Love, love, love!!! Or they could be showing you a sign of domination. I would not suggest continuing this behavior.
it's Love. the dog protects her puppies.
It means the dog likes you
The lithosphere sits on top of the asthenosphere.
It could simply be a form of "cuddling." It could also be away of the dog trying to say "I'm in charge." If you don't like it, the dog should be taught not to do it.
a gauze mat sits on top of a tripod which is a type of wire mesh
The reveran sits with them up top
the brain sits where your scull is at the top of your head stupid!!:)
The lithosphere sits on top of the asthenosphere.
A dog sits on a person to show dominance.
I think you mean a steeple, or perhaps a spire which sits on top of the steeple?
Iceland sits on top of water.
The breed of dog that sits on the tuckerbox is an Australian Kelpie