Most commonly, we see two forms of heart enlargement, one due to a leaky valve, the mitral valve, typically, that we call hypertrophic cardiomyopathy. The other is dilated cardiomyopathy, which we typically recognize as dietary in origin.

Spaying or neutering can sometimes help with specific behavioral issues, but it's not a cure-all. Additional measures, like specific training or medication, are usually required to fully resolve the problem.

Socialization is paramount. Your dog should ideally meet 100 people and 100 dogs by the time they're 16 weeks old. If you adopt an older dog, you'll have more work to do, but starting as soon as possible and exposing them to different situations, people, and dogs is the best approach.

I would recommend seeking professional help as soon as you notice any issues. The sooner we address problems like aggression, mounting, inappropriate urination, defecation, or destructive behavior, the less likely they are to become lifelong problems.

Usually, behavioral problems do not resolve themselves. If there's an underlying behavioral issue, it typically needs to be addressed, whether it's fear, anxiety, or a medical condition.

In our experience, we do see more behavioral issues with certain breeds such as German Shepherds, Australian Shepherds, and Australian Blue Heeler-type dogs. These dogs often develop behavioral issues due to fear or boredom, and without proper training and activities early on, they may develop behavioral problems.

It's crucial to intervene early on because this is the time when we can effectively teach the dog new behaviors and help them cope better. Once this window of opportunity closes, it becomes much more challenging to modify their behavior.

Environmental enrichment involves making your dog's environment more exciting. This could include providing a variety of toys or activities. Many behavioral issues in dogs stem from boredom, so keeping their mind active can prevent these issues.

The basic vaccines required for dog training classes usually include the Distemper-Parvo combination, Rabies vaccine, and most places also require a Bordetella or kennel cough vaccine.

When choosing a dog trainer, you should focus on what's important to you. A trainer who is calm, patient, and not easily frustrated is ideal. They should also focus on positive reinforcement rather than negative reinforcement.