Aruba island rattlesnake in exhibit

Aruba Island Rattlesnake

Scientific Name

Crotalus unicolor

Class

Reptilia

Order

Squamata

Range

Aruba Island

Habitat

Rocky hills

Estimated Wild Population

n/a
Aruba Island rattlesnake in exhibit
IUCN Conservation Status: Critically Endangered IUCN Conservation Status: Critically Endangered

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Physical Description

Aruba Island rattlesnakes vary from gray to pink to brown based on the color of their habitat. Their head and neck are adorned with diamond-shaped markings, which can extend down their body. These rattlesnakes can grow two to three feet in length. They are nocturnal during the warmer months, but are most active in early morning and late afternoon during the rest of the year. Their diet includes small rodents, birds, and lizards.

Interesting Fact 1

Aruba Island rattlesnakes use their tail rattle to warn off predators.

Interesting Fact 2

Although their venom is life-threatening to humans, these non-aggressive snakes are not categorized as dangerous because they only bite when provoked.

Interesting Fact 3

These snakes have a range of approximately 12 square miles and are considered one of the world’s rarest rattlesnakes.

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Species Survival Plan®

We cooperate with other members of the Association of Zoos and Aquariums to manage the zoo population of this species through a Species Survival Plan®.

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