We’re not entirely sure, just anecdotally. Some people say they are good guard dogs because when approached by the wrong person, the dog will bark and nip at them to shoo them off.
The problem with Poodles is that, unlike Terriers, for example, they don’t have a lot of depth in their genetic pool. So it’s difficult to predict what physical characteristics (if any) an individual dog will inherit from mother or father or both…