Watertown fir rescue responded to a mini van that rear ended a pickup on the south bypass at the 1500 s. Broadway area. The pickup stopped suddenly for a dog crossing the road. The pickup had minor damage and the mini van had a considerable amount of front end damage. The mini van went under the pickups bumper.  WFR used several bags of floor dry to soak up antifreeze and oil.  No injuries reported.  WFR was assisted by WPD and a local tow company.