I have a four year old male daschund. He is very protective. He barks at everyone who comes in, or walks by. He is also aggressive towards other dogs. He's a mommas boy. Follows me around, will bite other dogs if I show them affection. He seems to have a lot of nervous energy. I think he behaves badly because he's scared not because he's mean.
Any tips for how to help him be more independent and comfortable?
Any thoughts about our situation?

