River otter returns to the Bronx River for the first time since the early 1900s

Researcher RJ Hawkins said the river otter discovery came after a camera near the Bronx River captured the surprising image.

New Nat Geo groundbreaking documentary 'Lion' follows pride of lions in Kenya for 4 years

A new four-part nature documentary series tells a true story of family, courage and coming-of-age. It focuses on a lion cub who may become a lion king. "Lion" takes viewers on a journey involving that little cub and his family.

San Diego 18-year-old pleads guilty to kicking protected sea lion in attack caught on video

A San Diego 18-year-old pleaded guilty to a federal charge after he was caught on video kicking and chasing a protected sea lion at a La Jolla beach.

Big Bear eagle Shadow seen back at his nest with a new friend

Jackie's long-time partner, Shadow, was finally seen back at his nest -- and he wasn't alone.

Mystery surrounds dozens of dead sharks found at New Jersey beach