Do the kids love minibeasts? Here's a cute cartoon caterpillar for them to colour.
Caterpillar Colouring Page 2
Here is a fun "scene" colouring page of two caterpillars enjoying each others' company in the leaves - possibly before munching their way through someone's vegetable plot!
This colouring page illustrates the life cycle of a butterfly, starting with eggs on the left and progressing through larva / caterpillar and chrysalis.