another_bird anthro artist_collaboration avian black_body black_fur blue_body blue_feathers cbgenius cetacean_tail claws collar digital_media_(artwork) dominant dominant_male duo eupelycosaur eyebrows eyewear feathers from_behind_position fur glasses harpe_(another_bird) hi_res leash leash_pull looking_at_another looking_at_partner looking_back looking_pleasured male male/male male_penetrated male_penetrating moonstone_(cbgenius) open_mouth penetration prehistoric_species raised_eyebrows sex smile submissive submissive_male synapsid tail tail_feathers therapsid waist_grab white_body white_feathers white_fur
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