It's estimated that 100,000 dogs die each year by riding in the back of open trucks, according to American Humane. Even if a dog is tethered, they might try and jump if they're scared.
But there is hope that things will change. A new bill was recently introduced in Florida that would require all people to secure animals in containers or safely tether them on vehicles. Other states have more progressive laws in place already. For instance, a California law limits drivers to one dog in the back of a vehicle, if the dog is secured in a cage or cross-tethered to prevent the animal from jumping out.
"We are hopeful that there will be something done on a state level to insure that dogs riding in the back of pickups are secure and safe," Kate MacFall, Florida state director for HSUS, told The Dodo. "It's a sad situation. Fortunately, the animal was OK, but nobody should put their animal at risk."