I brought my 3-year old Thatcher home for the holidays where she has a big yard to run around in (and she runs like mad). I noticed that she started carrying her left hind leg up a bit and over the next few hours she doesn't want to stand on it at all. It is so depressing seeing her quiet and in bed since she is usually so full of life. She let's me touch the leg and manipulate it and it doesn't seem to feel too differently from her other leg. Any thoughts on what to do? I figure I would wait it out for 24 hours and see if it looks better otherwise take her in for an xray. Should I be icing her? Giving her a low-dose aspirin?