Diamondback Rattlesnakes in the Sonoran Desert

In early spring, diamondback rattlesnakes in Mexico's Sonoran Desert awaken from hibernation. Females bask in the sun to aid egg development, while males engage in ritualistic displays to compete for mates. The courtship involves head rubbing, and mating can last a day. After mating, the snakes hunt, using venom to subdue prey like squirrels, which they swallow whole by unhinging their jaws.

What triggers the diamondback rattlesnakes to emerge from their winter hibernation?

• The arrival of early spring

• The presence of predators

• A lack of food underground

• The increase in rainfall

Why do female rattlesnakes bask in the sun during early spring?

• To find food

• To shed their skin

• To warm their bodies and aid egg development

• To attract male rattlesnakes

How do male rattlesnakes compete for access to females?

• By hunting for food

• By building nests

• By performing a ritual to show strength

• By fighting with venom

What is the main purpose of the male rattlesnakes' ritualistic display?

• To scare away predators

• To determine the strongest male

• To shed their skin

• To find food

What do the rattlesnakes do after mating?

• They shed their skin

• They migrate to a new area

• They hunt for food

• They return to hibernation

How do diamondback rattlesnakes subdue their prey?

• By using hemotoxic venom

• By constricting them

• By drowning them

• By biting and holding on

What is the primary diet of diamondback rattlesnakes after hibernation?

• Fish

• Birds

• Small mammals like squirrels

• Insects

What is the effect of the diamondback rattlesnake's venom on its prey?

• It causes extensive tissue damage

• It attracts other predators

• It makes the prey sleepy

• It paralyzes the prey

Why do rattlesnakes align their prey head first before swallowing?

• To avoid choking

• To ensure the limbs fold neatly

• To prevent the prey from escaping

• To make it easier to digest

What adaptation allows rattlesnakes to swallow prey larger than their skull?

• Their sharp teeth

• Their unhinging jaws

• Their strong digestive acids

• Their expandable stomach