We have had 2 dogs castrated in the past, one of them was a little drowsy thae same evening, the other one you wouldnt have known he had had anything done. They were back to their normal walks within 2 days, weekend walks are much longer we didnt do that till the stitches were out. I have heared of complications but very rarely, if you do go away maybe put something over the wound the wound is very tine by the way.