My 6 month old puppy (brown dog) has started brutal fights with my 13 year old dog (multicolor). She is grown bigger then my 13 year old dog and gets the higher advantage and bites her neck. She has never drawn blood but yesterday she hurt her neck so much that she couldnt lay her head down for a decent 2 hours. We know my older dog is a rat terrier mix and we have no idea what ths puppy is. We want to stop this but we dont know how. Please help. Pet's info: Dog | Mixed Breed | Female | spayed | 45 lbs

That sounds like a tough situation and I hate to hear this is happening. Most humans cannot correctly read canine body language without additional training. Unless you know what the dogs are saying to each other, it's impossible to know how to modify and train the dogs behavior. Canine aggression is a complex behavior as it can stem from dominance, possessiveness, fear, anxiety, resource guarding or a combination. I recommend to work with a professional trainer. This will give you the best and fastest results. Researching on your own will also be helpful. Familiarizing yourself with canine body language and dog training can help you to recognize what your pet is trying to say. You can find many books written on the topic and there is a trainer named Victoria Stilwell who I think is particularly helpful. Best of luck.

I hate to hear that about Floyd. Aggression is a very complex problem and one that may be difficult to fix without a trainer. Aggression can be related to dominance, possessive behavior, fear or anxiety and each one needs to be addressed in a different fashion. The trainer will be able to determine the cause. The trainer will then work with you and your pet to modify both of your behaviors to meet a common goal. There are several different training methods so you will need to find the one that works best for you and your pup. You should also pick up a few books about dog behavior and dog training so that you can learn to recognize your pet’s body language. By knowing what he is saying, you be better able to react before he reacts. You should also have Floyd examined by his veterinarian to make sure there’s no evidence of pain or infection which could cause a certain behavior change. Since he can’t talk and tell you what is wrong, it is best to be cautious and play it safe. I hope this at least points you in the right direction. Please post again with any further questions.