dee,
Dogs are GREAT!!!! I'm a dog owner so I'm rather biased towards dogs being good.
Your big is correct in that ya gotta sleep sweetie. I know the nighttime can be scary and the dark can be scary but your doggies are gonna be right there with you on the couch and they won't let nuttin' happen to you! Dogs are good 'bout stuff like that.
As for the dark? You can always keep a light on all night while you sleep. That's totally okay to do.
Good job on brushing the fangs

that's what I used to tell my ma I was doing when brushing my teeth.
I hope you and the wonderful safe snuggly doggies sleep well and tomorrow goes well for your big.
Nice to meet you dee!!
__zh