rule 34 2023 animal genitalia animal penis antlers balls big balls black body black fur brown body brown fur canid canine canis cervine genitalia cervine penis claws countershade torso countershading deer digital media artwork digitigrade duo english text erection feral feral on feral feral penetrated feral penetrating feral penetrating feral from behind position fur genitals grey body grey fur hi res hooves horn interspecies lizardlars male malemale male penetrated male penetrating male penetrating male mammal paws penetration penis pink inner ear pink penis predator penetrating prey quadruped sex simple background spitey text toe claws white balls white body white fur wolf yellow eyes 8834528