Thank U all for the good advice to me. The Vet. examined him, and he injured his neck. The vet's 1st question was "Has tummy had any injury?) I thought and then I told her that 2 weeks before he decided he didn't want to use the ramp to get off the bed. He jumped down the other side on the way down his legs gave out and his head crashed into the wall. No symptoms though. The trembling is from pain. So he is on pain meds for 1 week. Thanks everyone. LaVonna happy to be a slave to Tummy Boy.