Mary gasped as she felt the tingling focus in her head, and she raised her hands to her furry cheeks, squeezing her eyes shut as the sensation intensified. Under her fingers she felt a strange pulsing, as if her jaw was pushing outwards against her hands. Her pinkies brushed against something cold and wet, and she could feel the fur on her face growing thicker. Unable to resist, she blinked her eyes open, only to be greeted with the sight of a fully canine head atop her still-human shoulders! The fur had grown slightly, taking on an auburn sheen to match her hair, which seemed to have shortened to match. Her ears had flopped over and were covered in the same fur, while her formerly hazel eyes had darkened to brown, her irises growing until only a bit of white could be seen. The biggest change had happened to her nose and mouth, which had pushed out into a long, square muzzle! Letting her jaw drop open, her enlarged tongue lolled out to one side amongst pointy teeth. She had a dopey, doggy grin on her new face, not accurately reflecting the inner turmoil she was experiencing.
Worried that the changes would continue and knowing she had to do something while she still had hands, Mary raced back into the living room, ignoring the crick in her back that was making walking upright almost painful. Quickly she flipped through the Vials, snatching the Human vial and almost dropping it in her haste. Her empty coffee mug from this morning still sat on the side table, and she rushed to dump the vial's contents into the cup, hoping she could drink from that when she could no longer grasp a vial.
Sitting back on the couch, she was surprised when her legs lifted from the floor - seeming to have shrunk a bit in length. Twisting, she pulled them up beside her, coming to rest sphinx-like on her elbows and ribcage with her lower paws tucked to the side. Her cock, lacking attention for the past few minutes, had retracted, pulling back into a strange sheath that was attached at an upward angle to her lower abdomen.
"That's what I resemble!" Mary thought, having just remembered a drawing from a history-channel show about Egypt she had recently seen. "I look like that Anubis guy, er... god? Well, he had pointed ears, but other than that..." She lowered her muzzle to rest atop her still-human (but decidedly rougher and more masculine looking) hands, pondering her current situation. "Should I try to lap up the Human Vial, or should I see if these changes are going to progress any further?"