Winston the dog has no problem with people. But he cannot stand police cars, specifically their bumpers.

On March 14, while lying in wait for speeding motorists, a Chattanooga, Tenn., police officer felt his vehicle bouncing around. Soon he realized Winston was attacking the front bumper. A second unit was brought in to document the assault (which can be seen in the video above and here).

The use of a Taser did not stop the animal, but eventually the boxer-bull mix was apprehended and taken into custody at the McKamey Animal Shelter where he was held for two weeks. On Thursday Winston was reunited with his family, the Emerlings, who paid $200 in fees.

City Court Judge Sherry Paty acknowledged that the violent attack did not happen to any people but insisted that the Emerlings take Winston to at least two obedience classes so that this behavior could be quelled before others were injured.