2017 anthro anus blue_eyes boots butt chipmunk clothed clothing female footwear fur half-closed_eyes hi_res looking_at_viewer looking_back looking_down mammal open_mouth partially_clothed presenting presenting_anus presenting_hindquarters presenting_pussy pussy rear_view rodent sally_acorn simple_background smile solo sonic_(series) spazman spread_butt spreading standing thick_thighs white_background