Are dogs stereotyped?

Dogs are stereotyoed because if a female has a chiwawa the chiwawa would be more agressive with men than they are with women. But if a man has  a pitbull  the pitbull would be more agressive  with women than they are with men. The reason why dogs are stereotyped is cause my aunt has a chiwawa  and everytime my dad and I go visit my aunt house we always get attacked by her dog little chiwawa Lol. The dog is so hilarious by the way it tries to attack people. When we around my uncle piybull it just be sitting yhere it doesnt growl or anything it just be friendly thats why i say chiwawas are more aggressive to men than they are with women.