adopted age_difference anthro bed blush claws clitoris cub digital_media_(artwork) dragon drychicken duo eyes_closed female fur furniture hair hand_holding inside interspecies larger_female lying male male/female mammal mature_female missionary_position mother mustelid nude older_female on_back on_bed open_mouth otter parent penetration pussy reptile scalie semi_incest sex size_difference smaller_male son spread_legs spreading sweat vaginal vaginal_penetration webbed_hands young younger_male