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This book is written about the Horned lizeards. In this book, Volunteers and Scientists about to catch the Horned lizaed to research it. Scientists attach small radio transmitter to catched Horned lizard. They can know place where exist Horned lizard by it.
And this bok tought us about living of Horned lizard. Horned lizard's favorite food is Harvester ants. Almost they eat only Harvester ants. So, Horned lizard isn't there if Harvester ants isn't there!!