Sprout was fine the following evening, and no measures had to be taken. The only time he was 'weird' was when the meds were still in effect. I honestly think the skinparents go through more of a healing period than the dog does. lol! It is us who worries endlessly until they are out of there. It's us with the high blood pressure due to worry. They get a little snippy-snippy and are sleeping the whole time, and then wake up to oodles and oodles of love and hugs and kisses and rubs and treats and toys and oohs and awws and such. They probably think neutering is the best thing since peanut butter.