Potential Injury on my iguana
 

I went upstairs to feed my iguana and I saw a lot of blood under his cage. (he doesn't really have a cage, just a perch by the window in my reptile room that he rarely moves from). It was a lot of blood. He didn't seem to be hurt, he was acting normally but I noticed his cloaca had some dry blood on it. I have NO idea what to make of it. He ate his food just as he always does.

Any photos you can share of the iguana and/or blood?

If you saw a lot of blood but no injury, and think the blood may have come from the cloaca, that could point to an internal injury. I would not delay in getting this animal to the vet.