IV.

Jackrabbit

One species of jackrabbit, the black-tailed jackrabbit, is found in the western parts of the United States and Canada. The fastest of the rabbits and hares, jackrabbits achieve speeds of about 70 km/h (about 45 mph) and can bound some 4.5 to 6 m (some 15 to 20 ft) in a single jump. Because this species competes with grazing animals for food, livestock owners in the western United States have undertaken great drives to reduce the hare population, which has been estimated to be as high as 3,100 per sq km (8,000 per sq mi). Jackrabbits may carry tularemia, a bacterial disease that can be fatal to humans.