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3_toes anthro balls biped claws digitigrade erection feet foreskin genitals greyscale half-erect humanoid_genitalia humanoid_penis klongi leaning lizard looking_at_viewer lying male monochrome muscular muscular_anthro muscular_male non-mammal_balls nude on_side penis reclining reptile retracted_foreskin scalie scarf simple_background smile solo toes