Been waking up with bites of some kind and then I found this in the shower bathroom. I do have a dog so it would make sense.

With about 80% certainty I can say that's a flea.

I think it looks like some kind of small beetle and not a flea.

It's hard for me to tell, but it kinda looks like it has wings folded up down it's back, under that shiny wing shell thing that is in two parts that I don't know the name of.

Is the bug still there, and if so, can you take another picture of it with something next to it like a ruler or coin or peanut for scale?

Weird looking flea, but that might be from the water.

Looks like a bed bug to me.

Definitely not a flea.  It lacks the kangaroo jumping rear legs

Yup not a flea, it's some kind of small beetle. If you think you have fleas in the house, put a shallow bowl/kitchen dish filled with warm water and a little bit of dish soap on the floor in the room you suspect, in this case wherever the dog sleeps would be a good idea. shut the room and leave it for an hour or so. If there are any fleas they will be attracted to the heat jump in and then not be able to get out and you will see them.