How does the next paragraph end?

How to find and choose a dog trainer
Decide why you need a trainer.
There are many reasons a dog owner may take their dog to a trainer. You may want basic obedience training for your puppy, or you may need behavior modification for your aggressive dog.
You may want to train your dog in a specific skill, like agility, or you may need help with a mental condition that requires medication. Knowing what you want from the trainer and what your dog's needs are can help you search for and pick the right trainer.