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1:1 anthro big_butt body_worship bubble_butt butt butt_worship cave_painting dinosaur duo female huge_butt huge_hips huge_thighs human kneeling larger_female mammal marginocephalian ornithischian pachycephalosaurid prehistoric_species purple_body reptile scalie size_difference stella_(upai)stygimoloch tail thick_thighs upai wide_hips