We have two doberman pinschers as well as our beardie. I had the dogs, Brutus and Lady, outside in our back yard and took Ozzy out of his cage so he could have his daily play time. I have french doors to go out into my back yard in the kitchen. I saw the dogs looking and then they would step back and tilt their heads and come forword and kept repeating this. After like three times I had to see what was going on. Here Ozzy was by the doors where they were flattened out with his beard out! He must have had them scared!