rule 34 anal anal sex anthro arthropod balls barefoot black body black fur claws crayfish crustacean decapoda detailed detailed background digital painting artwork duo egg egg implantation exoskeleton felid feline feral forest fur genitals gore grey body grey fur gross guro hi res inner tube internal jeffusherb lynx malacostracan male malemale male penetrated male penetrating male penetrating male mammal marine markings multicolored body multicolored fur nature nude pawpads paws penetration pincers seaweed sex sludge swamp toe claws tree underwater underwater sex water white body white fur 4282125