Livestock ID

Retinal Image

The identification of livestock has evolved substantially in the past few years and appears to be changing each year.  Find out more on COOL, Premise ID, and the use of retinal imaging for State Fair market animals. 

If you're interested in learning how to retinal image livestock as a volunteer at the county level, check out the resources below including a training video.


Weigh-In Info


Sheep/Meat Goat Weigh-Ins 2017

Market Beef Weigh-Ins 2017

Swine State Fair Tagging

Livestock ID (4hOnline)

  • Animal ID on-line (Word or PDF)
  • Market Beef verification process (Word or PDF)
  • Market Sheep verification process (Word or PDF)
  • Market Swine verification process (Word or PDF)


Retinal Imaging


Original RI Machine

User Guide

Online Database System

Tablet Scanner 

User Guide

Good/Bad Image Examples

Sample Rental Agreement

     (County to County)


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