The Big ImageBoard (TBIB) - animal genitalia animal penis aroused asinus balls balls expansion big balls big penis body part growth breasts brown balls cafet'zin (artist) clitoris darkened balls darkened genitalia donkey equid equine equine penis erection expansion exposed breasts feral fucked silly fur fur growth gender transformation genital expansion genital growth genitals glowing glowing eyes goo transformation grey body grey fur growth hair hairless balls herm hi res hooves horn horn growth huge balls huge penis human human to feral hyper hyper balls hyper genitalia hyper penis hypnosis intersex long hair mammal medial ring mid transformation mind control mind simplification nude offscreen character open mouth penetration penis penis expansion penis growth pseudo pussy pussy questionable consent shaded sheath signature simple background simple shading slime solo species transformation spots spotted genitalia spotted penis spread legs spread pussy spreading tongue transformation underhoof unicorn unicorn horn unusual anatomy unusual genitalia urethral urethral penetration vaginal vaginal penetration