A Bear Named Winnie. It's based on the true story of the real bear that inspired A. A. Milne's Winnie-the-Pooh stories.
Stephen Fry is adorable as always in the role of the head zoo keeper. I didn't recognize too many of the other actors, but they all did a fine job. In the interest of full disclosure, this movie is set during WWI and there is one battle scene towards the end that might be difficult for sensitive or young children to watch. It's not gory, just sad. And the ending might make sensitive mommies a little teary-eyed.