My Pebbles has been having a tricky time. She has a liver or gall bladder problem. The vet hospital had to sedate her to take biopsy samples to see if they could see what is wrong. They said she might be drowsy afterwards. I would say the opposite. Apart from eating loads ( which didn't surprise me after she was starved for 20 hrs) she seemed unable to settle tonight. She wouldn't curl up, just sitting a bit sphinx/loaf position. Keeps getting up going outside for 5 mins then back in, eat more food, sit back down. She smells of antiseptic where I think they have shaven her and taken biopsy samples. Could the smell be unsettling her as cats sense of smell is much stronger than humans. She is putting and rubbing her head on my hand for petting. It's been a really long day and I didn't want to come to bed and leave her. I will see if she looks settled in the morning.