She had yet to try the entire rat vial and even though she already had a rats tail just the experience alone was enough to cause her to quite literally drink the entire vial at once and after she did this she began waiting to see what would happen to her, minutes went by and still yet nothing now a bit upset Mary then deside's to get something to eat and so she then heads for the kitchen and straight to the fridge where shortly after she opens it she suddenly hears her stomach starting to moan and groan and gurgle rapidly with a rather unnatural hunger and within minutes after this she suddenly starts to practically gorge on the food in her fridge oblivious as to what was happening to her or her body as she ate because unknown to her was that the minute after her stomach started moaning and groaning and gurgling she had been put into a trance by the rat vial's contents and as a result the trance was now making her think she never was human but instead a rat the same size as a human of her size the only difference though was that the trance was making her a rat that was although the same size as an adult human was as obese as one and so within the passing minuets marys body weight begins increasing from all the food she is consuming and by the time she had finished stuffing herself and realized what was happening to her there was no way the transformation could be stopped nor did she even want it to now and as a result she will suddenly have the urge to speak like a rat and as a result her human vocal cord begin transforming into her more appropriate rodent ones and within minutes after this she will now start talking like a rat and this is then followed by the urge to act like more like a rat and less like a human and within minutes she starts acting exactly like a rat would and should act and then seconds after that she then has the urge to start behaving like a rat and feel like a rat and as a result marys human intelligence, behavior, actions, feelings, voice, basically her entire human brain and mind itself starts transforming into that of her human sized rat's mind and brain and minutes after this she will then have the urge to look like a human sized rat and once she feels this urge she suddenly begins feeling heavy and within minutes she then listens as her now fattened human body starts transforming into her more appropriate rat body starting with her lower and mid body where her tail first emerged she then begins feeling her skeleton transforming into a rats and she then feels her legs turn into her hind legs with her feet turning into that's of a rats followed by her skin turning into that of a rats with thick grayish/whitish fur sprouting and soon spreading over her now lower rat body and soon covering her soon to be rat mid body and while she was growing her fur she suddenly feels her former clothing growing tighter around her growing rat bulk and within minuets she watches as her rat ankles bloat up until they burst through the seems of her pants this is then followed by her stomach bulking up to its more natural human sized rat stomach and as a result of her literally inflating to the same size and shape of a human sized rat she then feels her shirt stretch and stretch until with a few loud tears and rips later finally gives in to her new and more appropriate rat body now naked and almost 100% rat the final phase of the rat vial fluid's transformation begins and within minutes mary then starts feeling her head and skull transforming into her rat mussel and shortly after this she then feels her fur spreading up her throat and then covering her head and once that finished she then feels her ears, eyes, nose, and mouth transform into that of a rats and to finish that all off she then watches as her rat whiskers sprout completing her transformation now fully transformed and rat-ified she then walks on all fours up her homes stairs to her former human bed and with that falls into a genital and peaceful sleep.