The Big ImageBoard (TBIB) - 3d (artwork) 4 artificial limbs all fours animal legs animal limbs areola bestiality bodily fluids breasts canid canine canis cybernetic arm cybernetic leg cybernetic limb cybernetics cyborg digital media (artwork) disability domestic dog duo female female on feral feral feral penetrating feral replacement limb from behind position human human on feral interspecies machine male male/female male on human mammal nipples open mouth penetration prosthetic prosthetic arm prosthetic leg prosthetic limb realistic feral sex sweat tongue tongue out umbrafox what has science done