Slideshow: Fever Tick Inspection in Laredo

Federal USDA workers inspect Mexican cattle for fever ticks before admitting them into the country. If a single tick is found, the entire herd must be quarantined and sent back to the rancher.
Federal USDA workers inspect Mexican cattle for fever ticks before admitting them into the country. If a single tick is found, the entire herd must be quarantined and sent back to the rancher.

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