Bears Are Some Of The Most Ferocious Predators On Earth But They Are Also Some Of The Most Gentle Mammals When It Comes To Their Families This Is The Story Of Knut The Polar Bear Who Was Handreared By Zookeepers At The Berlin Zoo We Also Follow The Parallel Lives Of A Pair Of Brown Bears In Belarus And The Struggle For Survival Of A Mother Polar Bear And Her Three Cubs In Alaska
