A father and a daughter walk in to the pet store and find it deserted (save the pets of course).
"Katie" said the father "I'm gonna go use the bathroom, stay put here and we'll look for a puppy when im done ok?"
"Ok papa" said Katie, who obviously wasn't going to do that
"That's my girl! I'll be back in a minute"
So he left her at the front desk in search of a bathroom (it's next door, they don't have one) and katie immediately ignored her father's command and went straight to the kennels.
As soon as she opened the door she slammed it back "That's sooo stinky! (And also kinda good?) But I really want a puppy" so with her hand over her nose and pure puppy willpower, she entered the room and immediately noticed a currently waking up Sarah and two dogs who were giving themselves a bath. In fact, every dog in every kennel was giving themselves a bath in the same spot. They all looked really full and white stuff was coming out of their noses and buttholes Cum drenched the whole room and Sarah had become addicted to the musk while unconscious and began crawling to the cum and licking up as much as she could.
Katie, not knowing what was going on, saw sarah do this and wondered if she was doing it because it was tasty (it is but she doesn't know that) so she pushed past the awful stench and picked up a massive glob of cum and shoved the entire thing in her mouth.
In an instant, everything that made Katie the sweet little girl that she was had shattered. She was now bent over gobbling up as much as she could, same as Sarah.
They could feel as fur grew over their bodies, as ever growing dog cocks grew out of their panties, and as their pussies turned into cookies.
Even though Sarah was feeling good, katie felt amazing. She felt her pussy become excessively functional and dripping wet. Sarah smelled this and used her new paws to walk around katie and stick her still growing doggy rod straight into Katie's waiting bitch cookie.
They both cum quickly and from both organs. But they now have another urge and look down hungrily at their still growing members. They both put their muzzles to their cocks and cum, forever lost in the taste and filling themselves with their own seed forever.
But katie still isn't done. Sarah's cum made her instantly pregnant and just after 10 seconds of gestation, she gives birth to another self loving, cock hungry dog who immediately starts sucking away.
Katie now gives birth to another cock hungry, lowly dog every 10 seconds.