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According to the evidence, which is the most probable ancestral area of Rattlesnake ?

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U.S.
Mexico
Canada
Australia


Evidence has been collected to show the most probable ancestral area of rattlesnakes is the Sierra Madre Occidental region in Mexico.

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What is the family name of Rattlesnake ?

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Serpentes
Squamata
Viperidae
Chordata


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What is the main prey of Rattlesnake ?

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Birds
Rodent
Birds and Rodent
Insect


Rattlesnakes are predators who live in a wide array of habitats, hunting small animals such as birds and rodents.

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After how much time of birth, the Rattlesnake has fully functioning fangs ?

After one week of birth
After one month of birth
After one day of birth
They born with full functioning fangs


Rattlesnakes are born with fully functioning fangs and venom, and are capable of killing prey at birth.

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For how much time, the Rattlesnake venom remains stable ?

Many years
Two years
One year
5 years


The venom is very stable, and retains its toxicity for many years in storage.

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What is the body difference of male and female Rattlesnake ?

Male venom is much strong
Male has large external ear
Male have more thicker tail
Male have more thicker and longer tail


One of the differentiating features of males and females is that males have thicker and longer tails (because they contain the inverted hemipenes).

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This is not a type of Rattlesnake ?

Eastern Diamondback
Western Diamondback
Northern Diamondback
Speckled


There are 16 different types of Rattlers such as the Eastern Diamondback, Western Diamondback, Sidewinder and the Speckled, just to name a few.

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Rattlesnake are native to

America
Africa
Asia
Europe


They are native to the Americas, ranging from southern Alberta and southern British Columbia in Canada to Central Argentina.

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Rattlesnake venom ducts are located at

2 cm inside tail top
Tail tip
Lower jaw
Upper jaw


attlesnake fangs are connected by venom ducts to large poison glands near the outer edge of the upper jaw, towards the rear of the head.

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Rattlesnake eye pupils are like

Cat eyes
Dog eyes
Human eyes
Sparrow eyes


Eyes have vertical "cat-like" pupils

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