After the great spay/neuter project, I kept the cats in 'the first night' since they weren't completely over the anesthesia. The next day there was a full scale blizzard, then it was kinda cold out... all were done on Thursday except the last which was done Friday AM. Finally got nice weather (in the low 40's) and took out all but the two girls that got staples instead of stitches. I'm keeping them in until the staples come out (probably another week). What a relief!!! Do you have any idea of what it's like having 15 cats closed up in one small room? And every time I went in to feed, water, and clean the cat box, as soon as the door opened cats came running out. Catch one to put it back in, and two more came out.