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absurd_res anthro ape big_muscles big_penis deer duo extreme_size_difference feet genitals gorilla growth haplorhine hi_res huge_muscles huge_penis hyper hyper_genitalia hyper_muscles hyper_penis immobile inflation luxley macro male male/male mammal monkey_feet morbidly_obese muscle_growth muscular obese overweight penis planet prehensile_feet primate size_difference space toes weight_gain