The Southwestern population of endangered wild Mexican gray wolves has grown for the ninth consecutive year to at least 286.

Fourteen years after the first gray wolf, known as OR-7, was spotted in California in a century, the population has grown to ...

If the gray wolf is removed from the endangered species list, states take over hunting regulations. In Illinois, the gray ...

The eyes may be windows to the soul in humans, but the teeth are the telling feature for the Mexican gray wolf. Wear and tear on a wolf's sharp canine teeth can be used to track age, trauma and ...

The number of endangered Mexican gray wolves has increased for the ninth year in a row, but advocates say recovery isn't occurring fast enough.