The Big ImageBoard (TBIB) - alternate version at source ambiguous gender anal anal penetration animal genitalia animal pussy anus blue body blue eyes blue fur canid canine canine genitalia canine pussy cervix computer screen countershading duo ellowa (novaduskpaw) female female/ambiguous female focus feral fiftyfifthfleet fox fur fur markings genitals glowing glowing eyes hi res internal laboratory mammal markings ovum pawpads paws penetration pussy restrained restrained legs restraining table restraints science solo focus spread anus spread pussy spreading surgical gloves syringe syringe in ass uterus