FURVERT!

andromorph anthro balls_expansion catheter catheter_in_urethra chiron_the_hyaenodon comic duo expansion feces feces_in_testicles feces_in_tube feces_transfer female filthivore genital_expansion gynomorph hallion_the_hyaenodon hi_res hyaenodon hyaenodontid incest_(lore)inflation intersex male mammal medical_instrument nude penetration scat_in_balls scat_in_penis scat_inflation scat_swapping scatplay scientific_instrument urethral urethral_penetration