A federally protected female Mexican wolf was found dead in an area near the northern Arizona city of Flagstaff, alarming environmentalists who worry someone may have deliberately killed the animal.

Government and private groups are funding a $100,000 reward for information about the death of a Mexican gray wolf in Arizona ...

Rather plain but with lots of personality, the Gray Catbird often hides in the shrubbery, making an odd variety of musical and harsh sounds -- including the catlike mewing responsible for its name. At ...