I personally think a little blood is okay, especially if its where realisticly, blood would occur, like when the sharptooth in 10 bit Bron's leg, and you didn't see a drop, where in real life, his leg would probably be broken, T-rex's had the most powerful bite of any animal we know of, or atleast I know of. And when Chomper bit that Giganotosaurus/ Acrocanthosaurus/ Carnotaurus, whatever you want to call it, shouldn't their have been a little? This is just my opinion, and I respect yours, so respect mine.