The highest age to adopt a dog at?

This shelter near me does Senior Dog adoptions (6 years+) for free, and I just posted a question about how active an older dog can be, but all I learned was that it depends on the individual dog haha. So what is a good age to adopt a dog? Should I pay the regular fee and go with a younger dog, or adopt a senior?... show more This shelter near me does Senior Dog adoptions (6 years+) for free, and I just posted a question about how active an older dog can be, but all I learned was that it depends on the individual dog haha. So what is a good age to adopt a dog? Should I pay the regular fee and go with a younger dog, or adopt a senior?
Im going into high school next year and I want a dog that can run with me for track, and wont struggle with running.
Thank you and no rude comments!
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