I don’t know if your dog is fixed, but mine is 1 1/2 yrs and was not fixed until last week. i told the lady at the animal services that he used to be so good, but out of the blues, he started to act a little aggressive toward other people (not us) she said that dogs can smell a female in her period from 6 miles away and that is why they get a little crazy, that after his surgery, he would start to get back to normal little by little
