What happens next in this paragraph?

How to choose a dog breed good at fetch
Pick a border collie for a highly trainable dog.
Border collies and other herding dogs are playful, smart, and energetic. Most will love to fetch and spend hours playing if you let them.
Options: [I] As an added bonus, they are very trainable, as long as you work with them to learn new skills. Another dog in this category is the australian cattle dog. [II] They're also fun to play with because they get their exercise while they're chasing chase dogs or other dogs. This breed of dog loves to be able to run and play even in total stranger areas. [III] Give them a short warm up and a chance to train before you start working on getting the dog proficient. A gentle, energetic finches and a kibble will help curb your dog's natural tendencies toward fetch in dogs. [IV] The same is true if you want to watch your dog on your walks. A male border collie loves to fetch and needs adequate time to get used to the urge to fetch.
[I]