While leaving the site access road and joining to the main graded road, the back passenger requested the front passenger the auxiliary cable. The driver turned around and gave the cable to the rear passenger, at the same time, back passenger reported seeing dogs ahead. The driver/operator turn back to the front, saw the dogs and initially tried to manoeuvre to avoid hitting them (3 or 4 dogs), and took a sharp turn which led him to lose control of the vehicle and the vehicle rolled over.