Each of these breeds will require a good amount of exercise to stay healthy and happy.

1. Golden retrievers are an active breed and require about 1-2 hours of exercise daily, which can include walks, runs, and playtime in a fenced yard or open space.

2. Labradors also require about 1-2 hours of exercise each day. They are highly energetic and require plenty of physical activity to prevent boredom and destructive behavior.

3. Greyhounds are known for their impressive speed, but they are actually quite laid-back and require moderate exercise, including daily walks and occasional playtime. They are a good option for those who are not able to provide extensive exercise, but they still require regular physical activity to maintain their health and well-being.

It's important to keep in mind that the exercise needs of each dog can vary based on their age, size, and individual temperament, so it's always a good idea to consult with a veterinarian or a professional dog trainer to determine the appropriate exercise routine for your specific dog.
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