Well in my opinion, their is not a real breed that I don't like when it comes to personality, b/c as said before most of it depends on owners their really isn't a bad dog just bad owners, to me. Some dogs just need more work others less, if the animal isn't cared for properly then it will not behave so. Pesonaly I wouldn't own a dog with a smooshed face, nor teacups I think their too small I would be afraid that if I wasn't paying attention that it would get hurt. Over all its not the dog I don't like its what people have made it to be.