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an animated movie about two rival families of monkeys living in a jungle

i remember having this film on a cd a long time ago, but unfortunately it is lost now. something u watched on youtube the other day reminded me of it so i decided to see if someone can tell me its name. so there were two families of monkeys that didn't really like each other. and i remember the atmosphere being pretty dark, some characters even die i think. one of the monkeys has some sort of a human made helmet, like a construction helmet or something similar. also i think one of the other characters was wearing glasses. any help is appreciated.
asked Apr 8 in Name That Movie by gremlin32331 (113 points)
no, that's not it :(
Was it 2d or 3d? We sure this was a film? This was not for kids like Space Chimps or Marco Macaco?
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