Wonder why your pet begins to act nervous going to the groomer when he/she never has before? More than likely it is normal. As they age restlessness and anxiety begin as they loose their hearing and sight. Over here we call it "walking the mall". Our senior citizens that have come every six weeks from the time they were 8 weeks old have no problems because they know the routine the table and the tub. Blind or not they know all the boundaries sights and sounds. So just because they quiver doesn't necessarily mean they are terrified it just means we use even more tender loving care for those aging joints, scan them for emerging new moles, and make sure they "hear"us approaching even though they can't.