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abs alien animal_genitalia antennae_(anatomy)anthro armor balls biceps biker_mice_from_mars biped dot_eyes ear_piercing ear_ring erection eye_patch eyewear fur genitals house_mouse low_res male mammal modo_(bmfm)monochrome mouse murid murine muscular muscular_anthro muscular_male nipples nude pecs penis piercing presenting prosthetic prosthetic_arm prosthetic_limb ring_piercing rodent sheath simple_eyes sketch solid_circle_eyes solo standing tree_stump unknown_artist vein veiny_penis