I ADOPTED A 2 YEAR OLD BOSTON TERRIER 7 MONTHS AGO. SHE WAS VERY CALM WHEN I MET HER. SINCE SHE HAS BECOME UNCONTROLLABLE WHEN SOMEONE COMES OVER OR WHEN SHE SEES ANYONE OUTSIDE. COULD SOMETHING BE HURTING HER TO CAUSE THIS? OR IS IT HER NATURE?
It is ner nature. Is she actually aggressive? If so then I recommend that you have a animal behavior specialist help. She needs to be socialized more. vetcare