Parents need to know that "Kung Fu Panda 3" is the third movie in the hit series about unlikely martial arts hero Po (voiced by Jack Black) and his friends, the Furious Five. This time around they face Kai, a scary supernatural bull monster that menaces all of China. Po and the others must fend him off in a series of frequently intense battles that may scare kids; some could also be upset by flashback scenes of parent-child separation, conflict between characters, and moments when it seems like key characters are captured, in danger, and/or possibly gone for good. Expect a little insult language ("stupid," "loser," etc.) and potty humor, but aside from the violence, there's not much to worry about in this effective, entertaining story about family ties (Po meets his long-lost biological father) and establishing your identity. Blended families may particularly like the way that Po's two-dad situation is handled.