Right... except the bible refers to them as "Little Youth", what did Elisha do, ruin their lemonade stands?
Now you're arguing for scientific accuracy in your fairy stories?
It sounds to me like kids back then do what kids do now... they go out and explore. or at least they did when I was little. Today's little snowflakes with their helicopter moms planning every activity of their day, not so much.
I have a summer home in Northern Wisconsin, and yes, I've seen bears operate in groups. My dad used to put us all in the back of the station wagon and let us watch the bears at the dump. Sometimes, he'd mess with us by backing the station wagon towards the bears as we all screamed in horror... because my Dad was like that.
Usually the one thing that will encourage aggression in Ursus Americanus is getting between her and her cubs. However, we are talking about Ursus Arctus Syrianus the Syrian Brown bear. But probably the same thing. If you have a large concentration of people, you have a large concentration of garbage. So that probably attracted bears to this town, and they might have had a series of the bears attacking children because anything larger they would probably run away from.
So, the logical explanation... a couple of bears started crossing into an inhabited area because maybe their natural prey was running a bit thin, attracted by garbage and in a course of so many months, they attacked a very specific 42 children.
Illogical explanation- Angry Prophet curses kids in a town, and when there are bear attacks, it must have been because you made fun of the prophet.