At least that's how it goes here in NorthEast Ohio. Unfortunately our back yard isn't landscaped (there is grass though) and Hazel used to have a tendancy to dig under the deck. One spring evening, I think she must have stepped in one of her holes that had turned into a mud pit while playing outside with Timber. So when I found muddy prints all around the house and said "Who did this!?" there really wasn't a need for a response.
And yes, it was just this one foot.