This is Arnold, a new arrival at our shelter. He is about eleven weeks old. He will need to go home with another confident dog that enjoys playing. Arnold can be shy at first, but once he warms up, he is a very playful puppy, especially when another dog is around. Australian Cattle Dogs — also known as Blue Heelers, Queensland Heelers, or Halls Heelers — need to be active and busy. They are highly devoted to their owners and often choose one person that they attach themselves to, and they do not want to be separated. Submitted by the Humane Society Silicon Valley.