Jeff tiredly blinked her eyes open before letting off a small yawn. Groggily she got up, unknowingly on all fours before something flicked within her. Small pellets of poo came out her still humanish ass followed by a stream of urine.
Jeff's eyes went wide as she looked to check what had happened. She had slept for hours and she didn't see anything immediately different. Trying to get up off of all fours she succeed but only barely. Supporting herself on the wall of the small cave Jeff leaned on it to check herself. Felling her udder Jeff shivered as she felt a small pressure from pushing her tailbone against something. Feeling back she felt a large lump just above her ass, her tail.
Moving her hands to her head she felt around before coming to her ears, they were longer and covered in fur. Rubbing her ears with her hands she sighed before looking down at her feet. While she still had the human shape of feet see saw a black material starting to absorb her feet.
As Jeff watched her feet slowly become hooves she heard a buck's call from close by. Twisting her head to the side she saw the same buck from earlier having gotten up and walking towards her. Jeff's eyes went wide as she shivered, the buck moving it's head down below her legs to sniff at her doe vagina. The buck's cold nose touching her wet fold causing a loud moan from Jeff. Getting down on her hooves and hands she once again presented herself to the buck, who wasted no time getting back on it's assumed mate.
Jeff had several things running through her mind at that moment, what if she was pregnant, what would happen, and why was she allowing this, but almost in an instant she felt pleasure beyond anything else. Moaning from the buck penetrating her she wondered why she would ever give this up. Her hooves had finished forming as fur started to sprout up her legs. With her acceptance of the changes they progressed much faster. Her hands started to ball up as they hardened into hooves, fur spread across her form. Her head changed shape completely as Jeff became a complete doe. And as Jeff and the buck both let out loud calls they fell asleep from tiredness.