A 16-year-old terrapin is paralysed in his hind limbs.
Channel: Dr David Sing
Date: 2015-05-05

Cracked upper shell is a clue. This terapin had been climbed over by the other terrapin over the years. Now she is paralysed in the hind legs. Trauma to the spine is likely the cause. 

The other terrapin, housed in the same tank, has no cracked shell. To follow up after a course of painkillers and antibiotics.