Burton was adamant that the apes should be substantially "more animal-like; flying through trees, climb walls, swing out of windows, and go ape shit when angry."
Burton je bio odriješit u inzistiranju da majmuni "više liče na životinje; da lete kroz drveće, penju se na zidove, skaču kroz prozore i rade ostala majmunska sranja kad su ljutiti".