A Shih Tzu should never be aggressive at all. These dogs aren’t generally nippy or barky, but they make wonderful watchdogs.
While they are not large enough to do any guarding or have a drop of ‘hunting’ in their blood, they are sure to alert you if you have a stranger coming home.
They could live in almost any environment (although they are delicate to extremes — like too much cold or heat, their coats are not built for it) and with most families. They might be a one-person dog or a lovely family companion. They are naturally confident, affectionate, and respectful. Toy-breed Shih Tzu expresses one of the most well-rounded personality traits.
Source: Shih Tzus are the Best
