At the end of the closing credits, three prehistoric elephant-mice appear and play a tune on their trunk-like trumpets.
The DreamWorks Animation logo is a cave painting illuminated by a spark.
Part of the closing credits are a sequence of cave paintings of the Croods, with each painting relating to a specific cast/crew credit.
The film title appears as the Croods set out for their hunt.
Belt and Sandy appear at the End title and sing "Dun-dun-dunn!"