Of course there is injury. Haven't you ever been hurt and felt pain without blood? Just because you can't see it doesn't mean it's not there. I'm sure they get bruised and sore, just like we do. With all that hair, how are you going to see a bruise any way, or even a little swelling? Also, bruises don't turn out immediately all the time. So, yeah, I believe they do get hurt, very hurt sometimes, even if they don't bleed.
Danny (husband) ~ Samantha (daughter) ~
Lucky (cat) ~ Beauty (cat) ~ MuMu (cat)