Rule 34 Dev - ai_generated anthro anthro_only appreciation back_muscles bernese_mountain_dog big_eyes blue_eyes boots bubble_butt casual casual_erection casual_nudity climbing_boots cub cute cute_eyes digitigrade fingerless_gloves handwear hiking hyper hyper_balls hyper_genitalia hyper_penis looking_forward mountain mountain_dog mountain_range muscular muscular_anthro muscular_arms muscular_male muscular_thighs nai_diffusion nude rear_view skies small_but_hung small_but_hyper solo solo_anthro solo_male standing sunrise sweaty sweaty_body toeless_legwear veiny_penis veiny_testicles young|11731915808