Wild Detectives: Lion's Den (from National Geographic)

Lion Numbers Plunge as African Wilderness Succumbs to Human Pressure (from National Geographic)

Get to Know the Faces Behind the Scenes

Get to Know the Faces Behind the Scenes

Get to Know the Faces Behind the Scenes

Dr. Sandie Black introduces the team behind the scenes at the Calgary Zoo. 

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Lions sleep up to 20 hours a day.