Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to choose between female and male dogs [title] Learn about aggression levels. [step] There are a lot of sweeping generalizations about dog gender, some of which are only partially true. One of the most commonly-held beliefs about male dogs is that they're more likely to chase other dogs and that they are always more aggressive than females.

Ending1: While there is some truth to this, neutering your dog will dramatically reduce the likelihood of these incidents. [substeps] Male dogs are more likely to challenge other male dogs, and statistically they may be more likely to show some aggression towards humans. Ending2: They may stop engaging in territory fights when aggression is the goal, and argue over issues like how dogs are elected and the size of their territory. [substeps] Males tend to be in charge of chasing other dogs, rather than fighting. Ending3: [substeps] The name " alpha male dog " means that they have the ability to signal aggressive behaviors, such as raising their front paws as a aggressive sign of offense. Male dogs assume that female dogs are superior-which can lead to certain career-related traits resulting in more aggressive dogs. Ending4: Some studies show that aggressive aggression does not last very long in a dog. In fact, during the first few months of a dog's life, they can become quite protective about their favorite territory and try to ignore it.

Answer format: ending1/ending2/ending3/ending4