Who are the voices of children in open season 3?

You're likely thinking of the *Open Season* movie series, which actually has three films, not a "season 3." In *Open Season 3: African Adventure*, the voices of the children are:

* Boog's daughter, Giselle: Voiced by Abigail Breslin

* The other young animals: There are a few other young animals in the film, but their voice actors are not credited.