Australian Shepherd
Australian Shepard dogs are energetic and courageous, which explains why so many are used as rescue and watchdogs. Due to their high levels of energy, they must be walked on a regular basis, otherwise they can become quite aggressive.
Siberian Husky
Siberian Huskies are quite energetic and demand a lot of attention. Keeping up with this breed’s needs can get quite taxing. Additionally, these dogs are very jealous, which leads towards aggression, especially with young kids.