Loyalty is rare in the animal kingdom, still certain species show monogamous behaviours like that of Beavers and Gibbons.

Like other wolves, these animals were hunted and persecuted on ... contain between five and eight individuals. Red wolves mate for life, and these pairs usually mate once a year, in February.

For most animal biologists, seeing an all-black variant of their studied species would be a once-in-a-lifetime experience. But in North America, especially in Yellowstone National Park where a large ...