I know this is probably going to sound ridiculous but at the moment I feel like the worst doggy mum ever. My girl is booked in for her spaying today and we are getting ready to go, she is running around smiling (staffy) and her usual hyper self getting excited about nothing at all and I just feel so bad knowing what I'm about to put her through. I was reading about how other people's dogs have behaved after surgery (lethargic, trembly, whimpering and less hyper) and I worry that I'm taking away such a big part of her personality. o know the pros far outweigh the cons but finding it hard to be logical, I even have butterflies for goodness sake!
phew 
I'm guessing you didn't do any research about staffs before you got him.