My Bullmastiff was down most of the day yesterday and today, in severe pain and not walking. I have been really upset, and fearing the worst, I've never seen him look this sick. Wife told me he tested positive for Lymes a couple months ago but has shown no symptoms. This is not unusual with Lymes, our Poodle tested positive as pup and showed no signs of it in her 12 year life. Put him on meds about noon today, and he is up and getting on my nerves again-life is good.