Rule 34 Dev - 2021 absurd_res anal anal_sex anthro balls bean_bag boots canine clothing colored_sketch degener4te duo echidna eye_contact footwear fox genitals hi_res knuckles_the_echidna looking_at_another male male/male mammal monotreme nipples penetration penis sega sex sitting sketch smile smirk sonic_(series) tails tailscanid|5580265088