Our tiny dog does that too, but I let it be. The couch is leather and easy to wipe down. And she only does it when we go out, she likes to look outside . But if you really want her to stay off, set a mouse trap and cover it with a sheet of newspaper. When the dog jumps up landing on the newspaper will snap the trap and will scare it off. After a few shots of this, he won't go near it again. You can leave just a sheet of newspaper to make the dog think the trap is there when you can't be supervising.