MUSCOY, Calif. (KABC) -- Surveillance video shows a man abandoning a dog in Muscoy, then running over the animal with a pickup truck, San Bernardino County authorities said, prompting detectives to ask for the public's help in identifying the suspect.In the footage, the driver is seen exiting the black truck and walking over to the passenger side, releasing the dog from the vehicle.The suspect then gets back into the driver's seat but does not allow the dog back into the truck.Sheriff's investigators launched an investigation after becoming aware of a social media post and video, according to a news release.That neighbor doesn't want to be identified out of fear of retaliation, but said they were alerted by their camera to activity while they were at work."