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A Jack Russell terrier exercises on a DogTread treadmill during SuperZoo, a trade show for the pet industry, at the Mandalay Bay Convention Center Tuesday, Sept. 11, 2012. The Utah-based company has pet treadmills ranging in price from $399.00 (the "Mini") to $1399.00 for extra-large dogs. The Mini, the smallest pet treadmill on he market, will be available in January 2013.

Steve Marcus