I just want them to figure out what's bothering the poor guy. I hate that its a fishing game, check this-that, until you find the issue. But eliminating things one by one will eventually pay off. Since you mentioned stiff leg, I'm thinking something is going on there, either leg/hip. Since you are near that area when cleaning his rear it triggers him. Tracey, Tyson literally went mad on us. It was bad, I had to just stand there, and literally let him continue to bite me once bc we had just lifted him into the truck, and he was in a rage, had I moved - he would have fallen out of the truck. My entire arm was bit, and bruised for weeks. And once he was pissed, he was pissed. But it was bc we had just picked him up to put him in the truck, & that must have really hurt his legs. I bought a ramp after that last episode. That & the meds, he's so much better. Let me tell you - we were both seriously scared of him for about a week. It broke my heart.