This should make you wonder, but I know how you all feel about conspiracy theories. 14 Search Dogs From Ground Zero Have Died Since 9/11 Fourteen search and rescue dogs who dug through the rubble of the World Trade Center have since died. Eight of the dogs died from cancer. Researchers at the University of Pennsylvania School of Veterinary Medicine said they don't believe there is a connection between the deaths and the chemicals the dogs were exposed to. But the New York Daily News said some dog owners blame the mix of chemicals their dogs were exposed to during the hunt for survivors and remains after the attack on Sept. 11, 2001. And the lead author of the study said the surviving dogs will need to be monitored for the rest of their lives. Dr. Cynthia Otto said if they begin to have health problems, there is a good chance that people who worked to clear the site could have problems as well.