6. Exaggerated circling before lying down.
In can be an amusing site to watch a dog walk in tight circles prior to lying down. But with dogs in pain, this behavior sometimes becomes exaggerated; circling first in one direction, then the other, with maybe a few aborted attempts to lie down. Despite the apparent careful preparation, some dogs with osteoarthritis almost seem to fall down at the end, as it is too painful to ease themselves into position.
