Some dog breeds have a tendency to spinal problems, some severe enough to cause paralysis of the rear legs and loss of bladder control. Olfactory sheathing cells can be removed from the dog, multiplied in the lab, and then used to bridge the damaged spinal cord, with some degree of success in restoring movement, and bladder control.
Bladder control can also be artificially regained with an electrical implant controlled by the dog owner using a remote control.
Look around our 360 tour and see more about animal research in four very different animal facilities here: http://www.labanimaltour.org/
14+, useful for discussions about science futures