I have a typical white rabbit, "Dirty" Dianna, that lives at the school were I work. She kept escaping from her cage this past summer and I finally through up my hands and let her run free. She hangs out with our chickens and loves playing with the children during recess. Weird I know but true. Anyway, I watched her dig a pretty impressive hole the other day and when I came back a few hours later she had filled it in. Then today while cleaning out a shed I found another one and she promptly came over and filled that one in to. The two holes are no where near each other so I highly doubt they were entrances to a den. Any ideas as to why she's doing this? It's hilarious to watch and she does a really good job.