Aggressive 4-1/2 month Great Dane
Our 4-1/2 month old Great Dane has been learning commands (sit, down stay, bed) very well. He will even stay on his bed and stay until given the OK command to eat his food. We have him wait before going outside or through any doorway. The problem is that he gets very wound up when he is on his leash outside, jumping, growling and biting whoever is within range. He also can be sitting or laying down on his leash and when someone walks by he will jump up and lunge at them. Yesterday he lunged and bit my 13 year old daughter when she walked by to give her grandmother a hug goodbye. We are really worried that this behavior will only get worse and we want to understand if this is who he is or if trading can help. We feel we will always be waiting for the next time he is going to lunge (and worse, bite). We have a trainer and we are going to work on walking with a prong collar and learn how to use an electric collar. Our fear is that this might not help and we will have to give him back to the breeder. Any input would be greatly appreciated.