The Shield boost allows you to hit one obstacle without crashing. However, the Shield boost has a timer, so if you hit no obstacles during that time, the shield disappears. Also, if you crash into one obstacle, the shield disappears as well. It may come with certain vehicles when purchased and equipped, allowing the player's pet to not crash for a listed number of times. It depends on the number of shields given from the car, when used up the car disappears and normal gameplay continues.
The shield has the appearance of medieval times, as it is shaped with three points at the top. It has a gray border with a yellow middle in which a dark yellow and white-like symbol can be seen on the front. When obtained a spinning pale yellow silhouette floats inside the running pet.