What is the difference between a hedgehog and a groundhog?

Hedgehogs are prickly insectivores, while groundhogs are a sort of squirrel, and therefore rodents. Also, you don't have hedgehogs in the Americas or Australia, but you do have groundhogs in America. Groundhogs live underground (when they're not up top feeding), while hedgehogs don't burrow. Hedgehogs curl up for defence, but unfortunately this doesn't work against cars - hence the joke about the hedgehog who crossed the road to see his flatmate.... Groundhogs just disappear into a burrow - unless they happen to be in the middle of a road at the time.

Another difference is that you can't get groundhog flavour crisps, and hedgehogs don't have a Day.

Aside from there being no hedgehogs native to North America...the main difference is a Hedgehog is NOT fuzzy as is the Groundhog.

Both are: Kingdom: Animalia -- Phylum: Chordata --
Class: Mammalia and from there they split off.

Hedgehogs are easily distinguished by their spines, which are hollow hairs made stiff with keratin. Their spines are not poisonous or barbed and, unlike the quills of a porcupine, cannot easily be removed from the animal.

Groundhogs are covered with two coats of fur: a dense grey undercoat and a longer coat of banded guard hairs that gives the groundhog its distinctive "frosted" appearance.

https://en.wikipedia.org/wiki/Hedgehog

https://en.wikipedia.org/wiki/Groundhog

One can chuck wood!