Tuco is so good with people. He knows who he can and cannot act crazy around. For example, when my little grandma comes over tuco barley sniffs her and then walks away, as calm as a cucumber. But if my boyfriend comes over forget it, he'll be jumped on, riled up and full energy. Then again my boyfriend is 6 ft 1 and my grandma is 4 ft 10. Just goes to show you how wonderful his temperament is. It's even better with children. Love this dog so much. This is a pic of him listening to my grandma when she tells him to lay down. Look how compliant he looks!! Lol