Need a friend? Get a dog - if you can find one
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Kayla Cai tosses a treat to 6-month-old puppy Mocha at the Stern Grove off-leash dog park in San Francisco.Paul Chinn / The ChronicleShow MoreShow Less
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Dogs and people wander through the Stern Grove off-leash dog park. Dog parks have become crowded as pet adoptions rise.Photos by Paul Chinn / The ChronicleShow MoreShow Less
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Rachel Whiteside-Rosen and daughter Ella, 3, visit the Stern Grove off-leash dog park with 6-month-old puppy Bean.Paul Chinn / The ChronicleShow MoreShow Less
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Dogs run free and have fun at the Stern Grove off-leash dog park.Paul Chinn / The ChronicleShow MoreShow Less