Why are my intact male dogs fighting after moving in with a female?

Now is the best time to neuter them both. Neutered males are more docile and make better pets. When they reach sexual maturity at around 6 months and their hormones go into full swing so to speak, they may act aggressive toward other males and want to become dominant in the household. If you wait too long, neutering will not help. I suggest neutering all dog sin the house as soon as possible, then the hormones will die down in a few weeks. At this time, implement a training program with a trainer or by doing some research. The behavior will most likely get better, but that is not definite. Neutering with combined training is your best plan to change his behavior. .

I'm sorry you are dealing with this problem! The first thing to do is neuter Loki. His aggressive behaviors to other male dogs could be due to the hormones produced from being intact. Intact male dogs will fight to protect their territory and for females. Neutering him can help reduce the aggressive tendencies. After that is done, I recommend getting him in with a professional behavioral expert. I never recommend owners work with aggressive behaviors on their own due to the serious risks to safety, and it is something that is best left to the professionals. A behavioral expert can work with Loki and you on his aggression, and can help train him to reduce it. Good luck, I hope this helps!

It is possible that your younger dog being unneutered may be contributing to the aggression between the two of them. I would also try to think of the situations in which they have fought to see if there are any toys or other resources that they may be protective of. Consulting with a veterinarian or behaviorist may be indicated to determine the best way to move forward with both of them.

Neutering can sometimes help with interdog aggression, so if you plan on keeping them both, having them neutered may help. If they are constantly fighting with each other, it may also be time to bring in a professional who can view the situation in person and help formulate a training plan to get the dogs OK around each other. You may need to keep them completely separated and slowly introduce them in a neutral location such as on a walk, and then only have short monitored sessions until they can be trusted around each other. However, if one dog is lunging and growling before even being introduced, seeking professional help is best.

Yes, having them fixed can help reduce aggression as dogs fight over territory and females. I would definitely have them both fixed, and I would also recommend professional behavioral training for them both when they are fixed. This can help with the aggressive behaviors, and I recommend using a professional because training aggressive dogs can be dangerous. I never suggest owners do it on their own for safety reasons. First step is to get them fixed, and I would have that done asap.

I think you mean the male dogs are unneutered, as it is intact female dogs who are unspayed. To answer your question, yes they are being territorial. Male dogs will fight for territory when a fight is around, even if the female is spayed. To prevent this behavior, I would have them both neutered.

Hormonal changes that occur after being spayed or neutered can sometimes cause tensions. Keeping the dogs separated unless supervised may help reduce fights. If you notice one or both dogs becoming too excited or agitated, separating them and giving them a chance to cool off can help. Removing items of contention such as treats or toys can also help reduce fighting. If the fighting continues, or they are unable to be together at all, seeking out a local veterinary behaviorist or trainer in person that can observe their behavior may be useful for formulating a training plan to help both dogs get along again.