a cat.
"Be a cat." she said pointing her ring finger at Amy.
"Oh a cat, that's interesting." Jennifer said as she felt that changes begin. First she started shrinking down until she was the size of a normal house cat. Then her legs started changing. Her feet became paws as her beautiful feminine legs shrank and gained fur. Soon her curvy figure disappeared as her ass shrunk down, her hips reconfigured, and her vagina relocated to the back and became catlike. A tail soon appeared over her now cat behind.
Her human form continues to change as her the fur continued up her torso. Her beautiful cleavage melted away as her nipples became cat teats and more grew down her now feline torso. Her arms became just like her legs as she lost her thumbs as her hands became paws. The last thing to change was her head as her vocal cords became nonexistent, causing her to only meow. Her face changed as her eyes became green and slanted. Her ears relocated to the top of her head as her hair receded. She was now a cat.
"Wow, seeing it was pretty...hot." said Jennifer as she felt a little moist in her loins. "Can you understand me Amy?"
Amy shook her cat head yes. "Ok, let's see if you can change back."
Amy took off the ring and set in on the floor. Jennifer went over to it and put her paw on it. She meowed, but really she said, "Make me human again."
Soon the changes started again, only in reverse. Soon enough she was her human self again.
"Wow, that was intense." Amy said. "Well, now we know we can change back ourselves in animal form. What should we do?"