Rabbits and groundhogs

Question
How deep do Rabbits and Groundhogs dig, and do Groundhogs dig their own holes or use one a rabbit has dug?

Answer
Hi Mary Lou
Thanks for your question, but it is not one I can answer, or have any relevant knowledge off.  You may be best to Google such a question to find your answers.  My experience lies in natural therapies for animals, not other areas unfortunately.
Thanks again,
Silva.