Description. The western diamondback rattlesnake is the largest in Arizona. The rattlesnake is also responsible for the greatest number of human bites and deaths in the United States. A Mature Western Diamondback, Facts. Although their venom can seriously injure or kill humans, rattlesnakes prefer to avoid human contact. These snakes can control the amount of venom they use when they bite. Using price-to-earnings ratio PE and market value to book value of equity MV BV as indicators of growth potential, the study shows that the growth potential of the market challenger is significantly higher than that of the market leader , even after controlling for firm size, liquidity, profitability, leverage, cash flow, and age. The timber rattlesnake is also called the "cannebrake" rattlesnake in the southeastern region of the state. Scientific name: Crotalus horridus. Range: Most of the state, except north-central areas. Common in the eastern coastal plain region. Size: ft.Serpent, suborder Serpentes, or more, of reptiles which are distinguished by their limbless state and their very elongated body and tail. Classified with lizards in the order Squamata, snakes represent a lizard that, over the course of evolution, has undergone structural reduction, simplification and loss as well as specialization.