Diane listened to what her younger sister Tina was saying.Was she becoming a airheaded bimbo.Then as if to answer her question Diane's body began to quiver.Her nude shapely figure began to convulse as she fell to the floor of her sister's room.Diane's cute little mouth began to stretch hideously into a larger slobbering maw.Her thin short tongue stretched to at least a foot long.Her younger sister Tina stared in disgust as Diane drooled on the floor with her long lanky tongue hanging out of her mouth.Diane realized that her nose was moistening and she could smell scents more strongly.Picking herself up off the floor Diane crawled to Tina.Seeing her sister slobbering and panting with a black tipped nose crawling towards her makes Tina run to the corner of her room. "Stay away from me!"She screams as she watches Diane grit her sharpening teeth. Diane can't control her actions as she grabs her sisters ass with her newly formed pointed teeth ripping Tina's dress off her small frame.A small tight heart shaped ass is too much for Diane as she buries her moist black nose in Tina's ass crack and sniffs.Tina feels the cold moist nose and shudders.Diane tries to fight her actions,but it's uselesss.Diane's tail bone pierces her skin growing into a short stub.Diane felt her ears become pointy and her nails thicken.She was becoming a mutt!Her still nude shapely womanly frame began to shake in anguish as her private area began to swell.On hands and knees she felt a strange feeling in her crotch as it was stimulated with engorging blood.Looking at her vagina Diane howled she had a males anatomy.