The Owner had 3 veterinarians to check on this dog. No kidney stones shown on X-rays in one practice sometime ago. Now it is reluctant to walk down the 14 steps from the apartment to the lift unless the Owner sang a tune. Definitely not happy to climb up stairs. Intense pain on palpation of sacral area.
All signs indicate a spinal disc prolapse.
Long-bodied dogs over 5 years may have spinal disc prolapse problems. This is not a case for Viagra pills. The cause of severe pain in the sacral area, between the left and right hip bones, above the tail could also be due to traumatic injuries. Do check with your veterinarian if your dog exhibits abnormal behaviour.