C Richard Miles (1961)

Caterpillar, caterpillar, crawl, crawl, crawl;
Don’t fall off the garden wall.
Caterpillar, caterpillar, eat, eat, eat;
Grow so fat on your furry feet.
Caterpillar, caterpillar, rest, rest, rest;
Soon you’ll change to be the best.
Caterpillar, caterpillar, try, try, try;
One day you’ll be the best butterfly.