We just get very wet 
Actually, a word of warning, because its something I've never come across before: MuttDog has recently suffered from "Limber Tail" as a result of jumping into a flooded and freezing pond. I thought she'd broken her tail
. It's normally 'up' like a Pointer, but was hanging forlornly between her legs. I don't think it was hurting her, but she was definately uncomfortable and sad about it - wouldn't even come up to bed.
Vet said she sees it a lot in 'working' dogs with tails - Mutt is a Springer / Collie / Something-or-other and a lot more the wetter and colder it is.
3 days on Metacam and she's fine, but it's something I'm going to have to keep an eye on.