A very happy p1percub and her dog Jack, right after his joyous return home.

Redditor p1percub loves going running with her dog Jack. They and a (human) friend were playing around in a big, fenced-off field 4 days ago with no one else around (Jack is probably a rescued bait dog and doesn't like being around other dogs yet), when they got too close to a gap in the fence and Jack, thinking they were playing a game, bolted through the fence and into the street. He ran across the street, so p1percub's friend whistled for him to come back. As Jack turned around though, the traffic light turned and Jack was hit by a truck, and the "jerk" driving it sped off.

Sources: redditor p1percub | Daily Dot