My ~4 year old pitbull Nikki is acting sick..ever since yesterday around 1ish or 2ish in the afternoon. Before that, she was out in the backyard running around and she got out and chased 2 small bobcats away. Once they left (and I don't thin she really came into contact with them, unless where I couldn't see) she was all excited to be out and was investigating my neighbors house (no one lives there now) out of sight. She ran back down about 10 minutes later and was fine. About an hour later she was limping on her front left paw. There was no sign of anything caught in her paw and her leg did not seem swollen. Besides the limp she was fine-eating and drinking. However, over night she didn't have the energy to come with me to let the chickens out, and she started coughing a bit, or hacking almost. We fed her and she ate and gave her water, but she is not her normal self at all, no energy or enthusiasm any more. We looked her over carefully and saw that she had small scratches over her body, barely noticeable. She also seems to be shivering. From what I saw of the bobcats, they seemed normal [not sick]. Her rabies shot expired about a month ago, but does this seem like the early stages of rabies? We will see if the vet has any open spots today, but does anyone here have any experiences or knowledge about this? Thanks!!