Tiger beetles are a large group of beetles known for their aggressive predatory habits and running speed. The fastest species of tiger beetle can run at a speed of 9 km/h (5.6 mph), or about 125 body lengths per second. As of 2005, about 2,600 species and subspecies are known, with the richest diversity in the Indomalayan realm, followed by the Neotropics.Photograph: Muhammad Mahdi Karim