I came home last night from being away for one night and my 4 month kitten immediately urinated on the rug at my front door. She has not had this problem before. I cleaned the litter box (my husband didn't do this while I was away) and went about my business. She then got up in my lap and was acting really weird. She would stick her rear end up and press her head and chest into my lap while moving her hind paws. She has never acted like this before. I thought she was just glad to see me but this morning she was doing the head/chest on the floor while her back paws were moving and her tail stuck staight up in the air. She did this for a while and then ran down the hallway like normal. But right when I was about to walk out the door, I noticed her under the table in this strange position again. It was almost a Downward Dog Yoga position if you know what I mean. Should I be concerned? Has anyone else ever had an experience like this?