Airedale Terrier
Independent, intelligent, and a bit stubborn the Airedale Terrier will sure keep you on your toes. They are notorious diggers and will gladly eat your drywall when bored. They’re not great with other animals and need plenty of physical and mental stimulation to control their destructive tendencies.
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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.