Yesterday Mia was acting extremely clingy and very antsy. I played some fetch and some games with her earlier in the afternoon, then a long walk later in the evening and a nice swim - Usually plenty to wear her out and make her crash around 11pm.
Well last night she refused to go to sleep. She paced around her room and kept going outside and making odd howling noises. I have never heard her make any sort of howling/whining before, just the occasional bark when she hears something strange. This went on for awhile and I'd occasionally go out and check on her to see if she was alright, and she was always completely wired and became extremely affectionate with me. I eventually had to get up and block off her dog door so she couldn't go outside and howl anymore.
Went in this morning, only about 3 hours after I had finally gone to sleep, and she was still up and crazy.
She's also been licking her nether regions quite a bit.
She recently turned a year and is spayed.
Any idea of a reason behind the wonky behavior?