As Jeff browsed the options of animals he could change to he found a sub option tied to the package. There were tons of them, reality shift, gender change but he found one that seemed the most interesting to him. Partial transformation.
Reading the description of the option it said. 'Only want to be part an animal? Then try the partial change option, edit what parts of you will want to change.' This was an intresting option Jeff thought.
Clicking this option it brought up a new list for Jeff to look at. He thought that if he didn't want to be a full animal he could always be only part animal. That way he could adjust to that. The thought of being part animal was also an interesting bonus. So he started to browse the list of options, and soon Jeff found one that intrested him.