They hunch their back or they may lift their butt up in the air with their "elbows" on the bed/sofa when they're in pain, poor things. This pain seemed to be mostly on the second day, and not after. I just got the little girl kitty (2-3 yo) that I'm taking care of spayed. She belongs to a friend of a friend, but due to circumstances friend's friend had to ask me to foster her boy and girl cats. I didn't feel that I could afford the pain meds in addition to having Millie spayed. She actually hit under a couch for about a day and a half, which is because she's naturally a little skittish and also she had just gotten to trust me over the month I've been caring for her, and then I made her get an operation. It took a couple days for her to get used to the cone, and a couple days for me to figure out the best way to grab her and get the thing on her. You have to immobilize them by grabbing them by the scruff of the neck, like their mamas did when they were babies. It's been a week, and during that time I only took the cone/collar off first thing in the morning and when I got home at night from work, just so that she could groom. I watched her like a hawk and redirected her when she got near the site of her stitches. I kept the cone on her at night, knowing I couldn't watch her. There shouldn't be any swelling or pus, signs of infection, but on the second day I did see a bit of a bump at the spot, but it didn't look inflamed. There's a little bit of what looks like dried blood/a scab but it's a small and neat, and seems to be where the stitches are (they're dissolvable--thank God I don't have to catch her and get her back to the vet. She's a speedy kitty and realy flies around the room). I talked to a vet assistant who said you can use a warm moist (not hot) washcloth on their tummy to sooth them, and it helps them heal. She had her operation last Thursday, and now it's Friday a week later. She's had the cone off for a couple hours, and I'm thinking I can probably leave it off when I leave for work. To add to the drama, her brother has been spraying in the house due to all the stress. Argh! What a pair, or a trio, if I count myself amongst the troublemakers.