My Casey started acting weird Saturday morning. When he would sit or just stand he would favor his right paw by lifting it up a little (like he was going to shake with you). He didn't do this every time, but probably 80% of the time. I kept my eye on him and he didn't seem to have a limp and even was running around outside. [No one in the family remembers Casey hurting his leg at all either]. My husband and I looked over his leg and paw and didn't really think there was anything wrong. So Sunday comes around and Casey seems to be limping just a little bit once in a while. So my husband and I again look his leg over squeezing here and there to see if he reacts at all and he doesn't seem to be in any noticeable pain. We checked out the pads on his paws and nothing seems to be wrong there either. I am just wondering if any one has come across something like this before. It seems so strange that he doesn't seem to be in pain, but is favoring the paw and now seems to have a little bit of a limp. My husband is planning to bring him in early this afternoon. But I am just wondering if anyone could shed some light on it before then. Thank you in advance for any comments/suggestions.