Forget rain, sleet or snow.

The bite of a poisonous snake didn't keep mail carrier Efraim Arango from his mail route on Friday.

The 66-year-old Arango was bitten as he slipped mail inside a box. He told authorities that he shook his arm and thwacked the small snake against his car door to break its grip.

Arango continued to deliver mail for 30 minutes before seeking help.

Authorities said Arango identified the snake that bit him; it was likely an eastern diamondback rattlesnake.

Arango was treated at a Tampa hospital.

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