"In 1996, Botswana erected an 83-mile fence along its border with Namibia. The goal was to protect domestic cattle from the highly contagious foot-and-mouth disease. Within a year, though, the barrier had snared five giraffes, one elephant, several antelopes and numerous other wild animals.

In the 20 years since, border barriers have proliferated to unprecedented levels — and become one of presidential candidate Donald Trump’s favorite talking points. But while attention has focused on the human consequences of a more bordered world, the effect on wildlife is also dramatic.

Trump has proposed sealing off the U.S.-Mexico frontier with a “great” expansion of the current wall, which spans about 650 miles of the United States’ 2,000-mile southern front and is already harming animals. Bison along that border have been spotted climbing over barbed-wire fencing to get to food and water. And according to a 2011 study, 16 species in California have had as much as 75 percent of their range blocked."

Tik Root reports for the Washington Post November 1, 2016. [2]