My chihuahua is 9 months old and he has a lot of behavioral problems. He's always biting and always barking when he gets scolded. I've had a chihuahua before and he was a good natured dog. We don't know what to do with him. Is this normal for a dog to be always biting and barking?
No, this is not normal. First, I hope you had your pet neutered b/c this will help with the aggression. Second, I recommend a good dog trainer. Ask your local vet who they recommend. Good luck, vetcare