The Big ImageBoard (TBIB) - 2023 abdominal bulge ambiguous penetration anthro anthro on anthro anthro penetrated anthro penetrating anthro penetrating anthro aubrey (halbean) bat biped butt claws digital media (artwork) duo fangs female female penetrated hal (halbean) halbean hi res interspecies larger male male male/female male penetrating male penetrating female mammal membrane (anatomy) membranous wings mustelid open mouth otter paws penetration sex simple background size difference smaller female smaller penetrated teeth toe claws tongue tongue out white background wings