Preface: I am not a doctor, this is just my understanding. Human bites are, on the whole, much worse. You have to consider that the human mouth is full of bacteria that the human immune system hasn’t already dealt with, so human bites can infect really bad.
Not that rats don’t have awful things in their mouths. Get it looked at either way.
Wait a minute, that set glows in the dark?! I’ve had a set that looks like that for years, and had no idea it glowed!