A warm tingle radiated through Oura's chest. her nipples buzzing with a vibrant sensation. "Mm...Moo?" She muttered. her nipples growing firmer as the tingling intensified into a radiant pleasurable ache as those nubs grew into plump teats before her eyes. Her breasts growing firmer and swollen as an aching pressure filled them. relaxing her gaze as she focused on the familiar sensation. Tiny rivulets beading on her teat as she gently massaged her heavy udder. "O..Oh dear.." she murred "Moo indeed..."