Thanks to a group of farmers' ill-conceived plan, a herd of hybrid animals is wreaking havoc on the Grand Canyon.
Beefalo - a cross between buffalo and cattle - were created in the late 1800s by farmers trying to domesticate buffalo for meat production. A small group of the animals somehow found their way to the Grand Canyon, where they're breeding rapidly and destroying the land in the process. They now look like bison, and they're genetically only about 10 percent cattle, according to The Christian Science Monitor.
Here are a few of the ways people are paying for their predecessors' genetic experiment:
Beefalo don't understand historical preservation. Native American groups have seen the beefalo rub up against architectural ruins, destroying them in the process, and they've knocked over walls at cliff dwellings.