All I think of when I see blood is "Boy, that's gonna be tough to clean up". I worked at a vet office for a year and cleaned up many a bloody messes. Dried blood just does not come out of anything easily!
I once nearly got sick on a ambulace call where someone had bled from a tiny cut on the head all over the house. I just kept thinking how much I would hate to be the one to clean it all up! I mean, it was on the bed, carpet, lamp shade, wall, and ALL over the bathroom! It looked like a horror movie! I could barely believe all that blood came from a small inch cut on the person's head! I felt sick all the way home! LOL