If you ever run into one of the several venomous viper snake species known as puff adders you should turn the other way.
In a recent video from BBC Earth, a camera crew catches the incredible striking speed of a Puff Adder.
While the video may be too much for anyone with Ophidiophobia, it is a fascinating look at the way snakes go after prey.
Typically, snakes like these eat rats, mice, small mammals or ground birds. In this case, it's just a balloon.