I had a humongous German Shepherd, and a parakeet. The parakeet had a 30 word vocabulary and the run of our house. It was funny to see him land in front of the dog, pluck the hairs between his toes and generally walk all over him. Ranger was very intelligent, and very disciplined. He would just sit there looking at the bird with an expression that said, just one bite, Mom, that's all it would take. But he never bothered him!