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Fly lifts a leg to cover other dogs' marks. Then Solo comes over and marks over Fly. Und so weiter.

I've never seen my dogs mark one another's mark, let alone do the weiter thang.

What's really interesting in my house is how these patterns have changed with an aging ***. The old female was always the last one to cover a mark (with raised leg, of course). But now the male will cover her mark. Strangely, he will actually bury the pee spot, using his nose.
It was a sudden onset behavior change, tied to her degrading health. I'm reading it as a protective behavior.
Lynn K.
I've never seen my dogs mark one another's mark, let alone do the weiter thang.
It's just Solo's way of saying, "This is my ***." And he does it nearly every time Fly pees anywhere.

Melanie Lee Chang > Form ever follows function. Departments of Anthropology and Biology >
University of Pennsylvania > Louis Sullivan (Email Removed) >
Do you do anything with the dog in all of the rooms of the house? I ask because we had ... 20-30 minutes a night with him in that room and he started seeing that room as part of his den.

It's probable that what was going on was actually a little different. They often get the message when being housetrained that you aren't happy with them when you're all in the same place with "accidents", but they haven't figured out exactly where they are supposed to go. Quite logically, they go where you aren't, because they've learned they don't want to be around you and poop or pee at the same time. Any little used room is the logical perfect choice, the further away from where you usually are, the better.
Lynn K.