1/30/2012 11:45:12 PM - Dogs play a very important role in medical research, as service dogs, and as therapy dogs. They have been shown to sniff out cancer cells from the bladder, lung, prostate, breast, and skin with accura...
Tell people about these videos:
All content and video are property of their respective owners and have been displayed with their permission.
If you feel a video has been unlawfully uploaded, please report this abuse to us.