Hi all, we had Charlie our 8 month old blenheim castrated just over a week ago (on the advise of the vet re health reasons for the future ), I've read somewhere about possible personality changes ie calming down etc. Well we appear to have had the opposite happen, he now barks constantly at anything that moves (hardly barked at all before), sprays every where (even over our 11 week old tri) and seems to have developed a very manic hyper active personality. I know its only been just over a week, but will he ever calm down, if only to how he was before !!!!!