Why are my dogs fighting each other a lot lately?

1. Lack of socialization: Dogs who are not properly socialized may be more likely to exhibit aggression toward each other. This can be especially true for dogs who have not been introduced to other dogs in a positive way.

2. Resource guarding: Dogs may fight if they feel that a resource is being threatened, such as food, toys, or even attention from their owners. This type of aggression can be seen in both puppies and adult dogs.

3. Territorial aggression: Some dogs may become aggressive when they feel that their territory is being threatened. This can be a problem for dogs who live in close proximity to other dogs, such as in apartment buildings or neighborhoods with shared yards.

4. Medical problems: Some medical conditions can cause aggression in dogs. For example, dogs who are experiencing pain or discomfort may become more irritable and more likely to lash out at other dogs.

5. Breed traits: Some breeds of dogs are simply more prone to aggression than others. For example, certain breeds, such as the Akita, Chow Chow, and German Shepherd, are known for their protective and territorial instincts, which can lead to aggression if not properly managed.

6. Changes in routine: Dogs may become aggressive when their routine is disrupted, such as when they move to a new home, have a new pet introduced to the household, or experience a change in their schedule.

7. Dominance: Some dogs may become aggressive in an attempt to establish or maintain dominance over another dog. This type of aggression is more common in intact male dogs, but can also occur in spayed or neutered dogs.