chordata images - Joel Sartore

Marginated tortoises (Testudo marginata) at the Gladys Porter Zoo.

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ANI075-00041

Marginated tortoises (Testudo marginata) at the Gladys Porter Zoo.

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A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

Marginated tortoises (Testudo marginata) at the Gladys Porter Zoo.

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Marginated tortoises (Testudo marginata) at the Gladys Porter Zoo.

A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

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A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

Marginated tortoises (Testudo marginata) at the Gladys Porter Zoo.

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Marginated tortoises (Testudo marginata) at the Gladys Porter Zoo.

Photo: Marginated tortoises (Testudo marginata) at the Gladys Porter Zoo.

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ANI075-00037

Marginated tortoises (Testudo marginata) at the Gladys Porter Zoo.

A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

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A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

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A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

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A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

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A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

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A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

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A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.

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ANI074-00099

A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

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A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

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A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

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A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

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A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

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A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

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A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

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A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

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A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

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A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

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A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

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A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.

A twist neck turtle (Platemys platycephala) at the San Antonio Zoo.

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A twist neck turtle (Platemys platycephala) at the San Antonio Zoo.

A twist neck turtle (Platemys platycephala) at the San Antonio Zoo.

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A twist neck turtle (Platemys platycephala) at the San Antonio Zoo.

An ornate palm pit viper (Bothriechis aurifer) at the San Antonio Zoo. (IUCN: Vulnerable)

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An ornate palm pit viper (Bothriechis aurifer) at the San Antonio Zoo. (IUCN: Vulnerable)

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A speckled palm pit viper (Bothriechis nigroviridis) at the San Antonio Zoo.

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A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

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A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

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A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

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A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

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A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

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A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

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BIR014-00037

A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

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A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.

Photo: Julie Jensen Director of Marketing | WVC O: 866.800.7326 | D: 702.443.9249 | E: j.jensen@wvc.org

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