The Lagotto Romagnolo is not just a good family dog but an excellent watchdog. After all, the peasants used to leave their households in this dog’s care. It has sharp hearing, so much so that some believe it sleeps with one ear open, and will quickly alert the family of any intruder. When it comes to guests, they will bark and be wary but will not show any aggression. In time, they may even learn to trust those they see often, giving them a warm welcome into your home.