/*Brian McCauslin*/ was arrested outside Harrisburg.
Police say he was driving the truck that hit and killed 23-year-old /*Tiffany Jantelle*/ in /*Franklin Township*/ Saturday.
She was in the street comforting a dog her boyfriend had accidentally ran over.
Flowers and a stuffed puppy mark the crash scene Monday.
At Jantelle's mother's home in Piscataway, Tiffany's equestrian trophies and ribbons lined the walls. She loved animals and died trying to save one.
