premise: The Cat Scratch<br>Kelsey was playing with her childhood pet, a cat. She was scratching him like he always liked to be. Suddenly he freaked out and scratched Kelsey. Kelsey didn't understand this behavior from her usually sweet cat. She realized that her cat must have had an injury on her scratch spot.
hypothesis: The cat bit Kelsey later. 
reason: It just mentioned that it scratched her. So it may have bit her later or maybe it didn't... there's no way to know if the cat was going to bite her later... it didn't talk about it at all, so it may have happened or it may not have happened. 