Rule 34 Dev - 2021 anthro anus artist_name ass backsack balls barefoot biped book canid canine caninelove dated digital_media_(artwork) erection feet genitals girly hair hi_res hindpaw holding_book holding_object looking_at_viewer looking_back looking_back_at_viewer male mammal monochrome nude pawpads paws perineum pink_theme rear_view solo|7616110240