Crabs have 10 legs, which I guess could count, there's nothing that says going over isn't allowed, but they're not necessarily slimy.

I thought I'd solved it when I realised almost all turtles have algae on their shells making them slimy house 4 legs but then I realised that they were still only a slime probably not a slime yes, and I think crabs only qualify as a slime maybe.