The Animal Tracks feature is back. What many thought was a game breaking feature that was implemented in City Folk is returning in New Leaf. The feature was suppose to deteriorate grass and create paths where your character walked the most; however, grass deteriorated faster than it grew back causing your town to become a desert. this feature not only affected grass but snow during the wintertime.
Supposedly they fixed the feature in New Leaf, but such a horrible feature which had a huge backlash from the community should never have been brought back.
Full blown desertfication of a town in Animal Crossing City Folk.
Sorry to be the bearer of bad news. Let's just hope they really did fix this feature.