I assume you posted a picture of a caterpillar, the pic isn't showing up 
But quite different actually. A caterpillar can eat, breathe, crawl around, etc. which is much more than a 12 week gestational fetus can do.

But quite different actually. A caterpillar can eat, breathe, crawl around, etc. which is much more than a 12 week gestational fetus can do.