Hi, I have 2 Chihuahuas, Chica and Coco. Chica is 4 and Coco is 2. They love to go on walks, or play chase with their fav toy. You have to train them just like you train any other dog. Even children need to have correcting as they grow up. My Chica is mello and very sweet. My Coco is a protector and barks at noises like a door bell. She thinks when she barks she is a protector for me, but she alerts me when someone is at the door or coming to my door. Coco and Chica love to be right next to me or on my lap all cuddled up in a ball. They are very easy to train. You also have to socialize them and have them be around other people. I let other people pet them when I take them with me to the mall. I enjoy them very much.