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Zoo teacher Alex Farrell talks to a sixth grade class from Boulter Middle School about animal adaptations at the Caldwell Zoo in Tyler Tuesday May 23, 2017.

(Sarah A. Miller/Tyler Morning Telegraph)

Zoo teacher Alex Farrell talks to a sixth grade class from Boulter Middle School about animal adaptations at the Caldwell Zoo in Tyler Tuesday May 23, 2017.

(Sarah A. Miller/Tyler Morning Telegraph)

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