Australian Cattle Dog
Sometimes known as a Blue Heeler or Australian Heeler, the Australian Cattle Dog is medium-sized with some serious endurance. They have a reputation for being stubborn and having high energy levels. Not to mention their adventurous spirit and belief in their own invincibility will lead them to plenty of self-injuries.
Australian Cattle Dog
Schipperke
The Schipperke may not look like a dangerous dog, but this breed has very high energy levels and is strong-willed with a mind of its own. When left alone too much, they can get bored which leads to destructiveness. Not to mention, they are very suspicious towards strangers and can be aggressive towards other animals as well. They have a high prey drive and will harass small pets. To top it off, they have quick reflexes and are light-footed, so creatures who run won’t get very far. They bark a lot which could be problematic with children.
Schipperke