The problem is that often these animals’ wild relatives live nearby, and huge, testosterone-driven wild males may try to mate with domestic or tamed relatives.

Yellowstone, the oldest and most famous national park in the United States, once again offered one of those breathtaking ...

The drive to mate The force driving these raids is pure biology. All domestic animals are descended from wild ancestors. Steeped in evolution, natural selection has favored males who inseminate ...

The problem is that often these animals’ wild relatives live nearby, and huge, testosterone-driven wild males may try to mate with domestic or tamed relatives. Both animals and people lose in these ...

The drive to mate The force driving these raids is pure biology. All domestic animals are descended from wild ancestors. Steeped in evolution, natural selection has favored males who inseminate the ...

The wild and the tame Across Earth, humans raise about 5 billion head of livestock. In most places, wild ancestors are long gone, so herders don’t have to contend with interbreeding. The wild ...