I slept later than 4, but as I had read until 1am, 6:30 wasn't exactly sleeping in.
I awoke to Cleo (our dog) moving around the bedroom, bumping into the bed. I heard her do a yawn/whine "rout", meaning she needed to go outside, and then I heard her urinating. Not like her at all! I grabbed her harness handle and tried to pull her down the hallway to the kitchen, but she was very stiff-legged. Went back to grab clothes so I could take her outside and less than a minute later she was walking around in circles, around a pile of

on the kitchen floor. She was panting heavily, whining, and she shook and trembled. I brought her over to a chair, sat down and just kept petting her and talking to her. After about 15 minutes or so she stopped panting and settled down. Her head was tilted to one side, and when she tried to walk she "listed to starboard".
She's much better this evening, walking almost normal (for her) and acting almost normal. Her head is still tilted a little lower on the right side.
Looks like my sweet girl had a stroke.
(from earlier this month)