The cat's been very active and out a lot since the weather got better. On Monday morning she was asleep when I went out, I thought she'd come in, had the food left for her and crashed. DP tried to wake her at lunchtime and she was very groggy and holding one foot off the floor. Vet kept her in overnight but no improvement - suspects nerve damage so a referral for a scan, tomorrow morning. This may lead to an op, an amputation, or just rest and recovery. Has anyone any experience of anything like this? She has no visible injuries and ate and drank loads when we brought her home today.