What do you call a groundhog who eats too much? 
A roundhog
What’s green, has four legs, and jumps out of its hole on February 2?
The ground frog!
What would you get if you crossed February 2 with a puppy?
Ground-dog Day!
Explanation: All three of these jokes play with sounds: “roundhog” sounds like groundhog; “ground frog” sounds like groundhog; “ground- Dog” sounds like groundhog. And a puppy is a baby dog.
Sorry about being two days late for Groundhog’s Day… or is it Groundhog day? What a silly holiday!
Explain the Joke 