Sarah made a point of trying to have an abortion. She had come all the way from their home to Katy's college dorm room to deliver the news.
"They'll scrape this THING out of me and drench my womb with bleach!" she sobbed.
"Probably just hormones." said Katy.
"It's not fucking hormones, it's you and what you did to me and Cal."
She pointed to her slight bump of a stomach and said.
"They'll kill it and then I'm coming for you!"
But Katy didn't give up without a fight as Sarah strode out of Katy's room, she attached the dog dildo into her crotch as she started to turn her human vagina into a male doggie cock. Sarah was out of the room and in the hallway nearing the stairs when Katy burst out.
Grabbing her by her arm she swung her sister around throwing her against the staircase. Her long coat twirled like a summer dress. The pair of them started fighting as Katy slammed Sarah against the staircase. Smothering Sarah's body with hers. She clawed at her coat ripping it off Sarah. Sarah was in her jeans and black shirt that barely contained her bouncy breasts.
"NO!" Sarah shouted "this is wrong-"
She pushed Katy away, her hands on Katy's breasts. Katy savagely grabbed her sister by the elbows and pulled her body against Sarah's. Kissing her sister full on the mouth, Sarah felt her resistance crumbling like a house of cards in the wind. Katy ripped off Sarah's black shirt exposing the grey tank top that restrained her sister's breasts. Wet spots from where they leaked milk.
"i hate you..." Sarah muttered.
Katy started tugging down her jeans exposing her white panties. Sarah started tugging at Katy's shirt, she could feel the outline of that doggie cock straining her panties, Katy's stomach already covered with dog hair. She searched for it with her fingers and mouth but Katy pulled Sarah up and bent her over at the waist exposing her heart shaped ass. Sarah obligingly pulled down her panties as Katy hitched up her skirt.
Katy slipped her fingers down past the bulge of her sister's stomach to her vagina, she slipped a finger in. Sarah howled softly like a dog that she was becoming.
"Say it-" whispered Katy.
"fuck me" moaned.
"Like a dog?" Katy inquired.
"Like a dog..." begged Sarah.
Katy thrust hard into Sarah, a grunt and a moan came from her torn between the two sides of her person, one part woman one part bitch. Katy put the collar on Sarah's neck fur sprouted all over her body as the bitch in her took over. Katy was now the leader of the pack and Sarah was her bitch. Collapsing onto all fours Katy started to hunch over her ears elongating as she rapidly became a German Shepard and Sarah a Mountain dog.
Soon members of Katy dorm watch on in horror as two dogs were howling and fucking in the hallway. Only one of them understood what was happening, Clara seeing the human clothes ripped and strewn around the floor she eyed the German Shepard and with a smile said:
"Get a room."