SAN FRANCISCO (CBS SF) — A San Francisco apartment dweller’s petition against a National Park Service plan to put further limitations on unleashed dogs in parks is gaining steam.

Matthew Murphy authored the petition titled “Keep Our Dogs Free: Don’t Ban Unleashed Dogs From Bay Area Parks” targeting National Park Service Director Jonathan B. Jarvis.

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Murphy states in the petition that he lives in an apartment, “and like most people in the city,” doesn’t have yard space for his dog “Trooper” to play, making him dependent on their dog walker for exercise and bathroom breaks.

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Murphy argues that further restrictions on dogs would increase the cost of dog walking services.

According to the petition, the park service’s plan would ban unleashed dogs in all but seven places in the Golden Gate National Recreation Area, “a tiny fraction of the 80,000-acre federal park.”

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The petition had gathered more than 40,000 signatures as of Tuesday afternoon.