Why do you wake up in the middle of the night?

Last night I feel asleep pretty quickly. I have to say I was pretty tired and ready to rid myself of the day. I zonked, as I do most night as soon as my head hit the pillow. So what woke me up in the middle of the night/morning? Something that would wake any Mom up. Not that I'm a Mom, well at least not in the traditional way. To hear your child being sick, puking his/her guts out....makes you jump up and go to comfort them. That what woke me up last night. Poor Scout had been munching on to many "yummies" at the dog park (mulch, and whatever else is found on the ground at the dog park...let's not talk about it to much). Apparently the best time to get sick is the middle of the night. I've been pretty lucky with Scout, he doesn't get sick often (he used to never eat the dog park either), and when he does he is usually on tile or hardwood floors...so clean up is pretty easy. Dogs are kinda gross because right after they puke something up they just want to eat it. GROSS, I know, so I had to convince my "little" guy that he really didn't need to eat it, so I could get the cleaning supplies to clean it all up. I have to say I didn't think the stain would come out of the carpet, but after leaving the carpet cleaner on the spot all last night and today, it's pretty much gone. Thank you Resolve Carpet Cleaner! I had reach under the bed to comfort him after I cleaned everything up the best I could because he went and hid under the bed. Poor guy!