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abs anthro balls biceps big_penis bovid bovine cape_buffalo cattle circumcised circumcision_scar duo erection frottage fur genital_scar genitals hand_holding horn humanoid_genitalia humanoid_penis male male/male mammal markings monochrome musclegut muscular nipples nude pecs penile penis penises_touching pose scar sex sketch slightly_chubby spots standing sudonym tail tail_tuft thick_penis tuft vein