rule 34 2019 age difference animal genitalia animal penis anthro anthro penetrated anthro penetrating anthro penetrating anthro belly bernese mountain bud gutman canid canine canis clothed clothing dialogue digital media artwork domestic duo english text erection father father and father and son felix gutman fellatio furry genitals hi res humanoid hands lore izvy artist knot male malemale mammal mixed breed molosser mountain open mouth oral oral penetration overweight overweight anthro overweight male parent parent and penile penile penetration penis sex simple background son swiss mountain text topwear younger male 3950941