And instead of a puppetlike jaw that moves up and down, Big Tex's new mouth will move more like a human's.

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But the greatest tool is a mix of word of mouth, and a genuine belief you can strike it big with your next app.

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Dr. BORIS WORM (Assistant Professor, Marine Conservation Biology, Biology Department, Dalhousie University, Halifax, Canada): They have a huge head, a big mouth with which they can engulf their prey and then the rest of their body is a long tapering tail.

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Mr. Quinn casually raised the spoon to his mouth, ate the cinnamon and then took a big swig of bottled water without a twitch.

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The dresses, the shoes, the pinkish smell of perfume, the scratchy darkness, all pushed against me like the side of a big cat, thrust themselves into my mouth and nose like fur.

NEWYORKER: History of a Disturbance

Box, for example, started spreading entirely by word-of-mouth, and now has grown big enough to merit a fleet of salespeople calling on would-be customers.

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