Is your dog crying when he wags his tail or when he sits down?
This is often a case of swimmers tail or cold tail.
It happens when the dog has been swimming a lot (over use), usually in very cold water, but not always the case.
I give a bufferin (one per day) for 2-3 days and it clears up.
Never give regular aspirin, tylenol or advil to your dog.
There are other common names and reasons for this condition that
you will see in this article:
If you suspect something else causing the pain p1ease consult your vet.