premise: How to choose a dog breed good at fetch<br>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.
hypothesis: You should only pick a border collie.
reason: In the second sentence, it indicates 'other herding dogs', so the border collie is a suggestion but not a requirement.