I love cats...I love dogs....I love chickens....I love horses....etc.. Each has a place here and ea. has their own temperment and instincts. The cat's instinct was flight from the dog and anything in its way is going to get scratched. Cats scratch, dogs bite, horses kick, llamas spit..If we own animals then beware of their natural instincts as they will come out when frightened. I work with all my rescued animals and most have adjusted to the others to prevent this. Hope you clean that wound up good and be careful around any frightened animals. I'm wondering, did you not grab the dog because you thought he would bite? Sharon