My grandson is only 2 and LOVES this movie! I actually think it is pretty good also! The Croods, about a cavemen family who rarely venture out of their dark cave for fear of dying horrible, prehistoric deaths, has a tight script, inspired voice performances and some unexpectedly tender moments.
Eep, the teenage daughter of Grug, her paternal warden who lives his life in constant fear of the unknown and has taught the rest of his family to live a routine, reclusive life that only involves emerging from the darkness every few days to hunt down a giant egg to eat. The rebellious daughter who longs for freedom.
The story picks up once the family meets Guy, a slender young man with a more advanced brain capable of coming up with solutions for common everyday caveman problems (shoes, umbrellas, stilts, fire, etc) and he warns them that, yes, their entire valley is about to get swallowed up by earthquakes and lava. From there, poor Guy is basically, for lack of a better term, thumped on the head and forced to lead them to a higher plateau. The fun here though is Grug's hatred of Guy's intellect and Eep's methods of courting a boy - which mostly involve accidentally pummeling him. Also, through the lens of Guy, we're able to see just how hilariously inept The Croods are at just about everything.
There is a lot of physical humor in The Croods, but - shockingly - none of it involves bodily functions! There's slapstick galore, and a ton of hyperkinetic action-y chase sequences, but they all come together nicely. In fact, one of the most entertaining sequences in the movie happens within the first five minutes when the Croods head out and try to track down breakfast. You'll still find a lot of animated movie staples in this one; the idiot, the sassy granny, the cute animal sidekick.