Livestock Ear Tag Requirements in West Virginia: What Every Producer Needs to Know

If you raise cattle, sheep, goats, swine, or other regulated livestock in West Virginia, official ear tag requirements are not optional. They are a condition of moving animals to market, selling at auction, or crossing state lines — and the rules changed significantly in November 2024.

The West Virginia Department of Agriculture (WVDA) administers the state’s Animal Disease Traceability (ADT) program in partnership with USDA APHIS. Understanding exactly which animals need tags, what type of tag qualifies, and how to get them will protect your operation from compliance violations and keep your animals moving without delays.

Which Animals Require Official Ear Tags in West Virginia

Not every animal on your farm needs an official ear tag, but the list is broader than many producers expect. The species covered under the federal animal disease traceability rule include cattle and bison, sheep and goats, swine, horses and other equines, captive cervids such as deer and elk, and poultry.

The trigger for official identification is movement — specifically, when animals change ownership or cross state lines. These requirements pertain only to livestock moving from farms into livestock marketing channels where they change ownership and/or leave the state. Livestock raised and sold directly to consumers on-farm, entirely within West Virginia, generally fall outside the scope of mandatory official tagging.

For cattle specifically, the age and class of the animal determines whether a tag is required. The federal rule applies to sexually intact beef cattle and bison 18 months of age or older crossing state lines. The actual ear-tag identification requirement pertains to older cattle — over 18 months of age — and dairy-type cattle. Beef feeder cattle under 18 months are generally exempt unless a disease program or the destination state requires identification.

Sheep and goats face a separate and long-standing identification mandate tied to scrapie eradication. Sheep and goats have long been required to carry an ear tag indicating their point of origin. These rules apply to sheep or goats that are moving or have moved in interstate commerce, that have resided on premises where interstate commerce is conducted, or that are owned by people who engage in interstate commerce — including animals moved through markets or other sites where interstate commerce occurs, even if the particular animal has not left the state.

Pro Tip: Even if your cattle are beef feeders under 18 months, check your destination state’s import requirements before loading. Some states impose stricter identification rules than the federal minimum.

Federal RFID Ear Tag Rule: What Changed in November 2024

The most significant shift in livestock identification in a generation took effect on November 5, 2024. On November 5, 2024, new federal rules took effect requiring electronic identification (EID) ear tags for certain cattle and bison moving across state lines. The rule, published by USDA APHIS, replaces the old system of visual-only metal tags with radio frequency identification (RFID) tags that can be read electronically.

USDA APHIS amended the animal disease traceability regulations to require that eartags applied on or after a date 180 days after publication in the Federal Register be both visually and electronically readable in order to be recognized for use as official eartags for interstate movement of cattle and bison covered under the regulations. That publication date was May 9, 2024, making November 5, 2024 the effective date.

This requirement applies to official identification placed for any reason, including interstate movement, brucellosis vaccination, and tuberculosis testing. In practice, this means any new tag you apply to a covered animal for any official purpose must be an RFID-capable 840 tag.

If your cattle already carried official tags before the rule took effect, you do not need to retag them. Cattle tagged with visual-only official tags prior to November 5, 2024, do not need to be retagged unless they lose their ID. These changes only apply to official ID for cattle and bison. Other species retain their existing identification options under their respective programs.

Important Note: The November 2024 RFID rule applies specifically to cattle and bison. Sheep, goats, swine, and equines continue to follow their own species-specific identification programs, which are described in the section below.

Official 840 RFID Ear Tag Requirements in West Virginia

The 840 tag is the standard official identification device for cattle and bison in the United States. Official EID tags are USDA-approved official tags that have a visible 15-digit number starting with 840 printed on them that matches the electronic chip inside the tag, are stamped with the US shield, and say “unlawful to remove.”

The Animal Identification Number (AIN) consists of 15 digits beginning with the official country code — “840” for the United States. In compliance with federal law, AIN tags must display the U.S. shield if applied to an animal on or after March 11, 2015.

Two electronic technologies are approved for 840 tags. Both HDX (half-duplex) and FDX (full-duplex) low-frequency ear tags meet U.S. standards for official EID. Either is acceptable for official purposes. Choose based on your reader equipment and management software.

To purchase official 840 tags, you must first have a Premises Identification Number (PIN). A premises identification number (PIN) or location identifier (LID) is a unique code permanently assigned to a physical location and is required to purchase official animal identification tags. Each state administers PIN or LID registration. In West Virginia, you can request a PIN by contacting the WVDA Animal Health Office.

The USDA APHIS Animal Disease Traceability program provides detailed guidance on obtaining a PIN and purchasing approved 840 tags from authorized manufacturers and distributors.

Species-Specific Ear Tag Rules in West Virginia

Each livestock species has its own identification framework. The November 2024 RFID mandate is cattle-and-bison-specific, so producers of other species need to understand the rules that apply to them.

Cattle and Bison

As described above, all covered cattle and bison receiving new official identification on or after November 5, 2024 must have an 840 RFID tag. Per 9 CFR Part 86, visual-only NUES tags are no longer acceptable as official identification for cattle and bison when applied on or after November 5, 2024. Visual-only NUES tags for cattle and bison placed in ears prior to this date will be considered official for the life of the animal and need not be replaced.

Sheep and Goats

Sheep and goats fall under the USDA National Scrapie Eradication Program, which has required official identification for decades. The scrapie identification program is a mandatory USDA identification program for sheep and goats. Eartags and approved devices are required for the official identification of sheep and goats in interstate commerce.

When sheep or goats enter West Virginia from another state, scrapie identification is a hard requirement. Scrapie identification tags are required for all sheep. These tag numbers must be reflected on the Certificate of Veterinary Inspection (CVI).

Flock ID tags are the standard option for sheep and goats. Flock ID tag numbers are the producer’s flock ID assigned by APHIS or the state, followed by an individual animal number. The National Scrapie Eradication Program provides up to 100 plastic flock ID tags free of charge to first-time participants in the sheep and goat identification program until available funds are expended.

Swine

Swine identification requirements focus on premises-level identification for most commercial operations. APHIS is offering no-cost radio frequency identification (RFID) eartags to eligible swine producers. According to the West Virginia Department of Agriculture’s ADT page, no-cost swine RFID tags for sows and exhibition swine were made available for order in fall 2025.

Captive Cervids

Captive deer, elk, and other cervids face some of the strictest movement controls of any livestock category in West Virginia. Prior approval must be obtained from the West Virginia Department of Agriculture before any cervid may be imported. The import permit must be in place before transportation into the state is allowed. WVDA provides producers with 25–30 RFID tags per calendar year from state funding. This includes not only cattle producers, but also captive cervid and swine producers.

Equines

Equines generally require some form of individual identification and a Certificate of Veterinary Inspection (CVI). Owners should check specific state entry requirements before transporting horses across state lines. Ear tags are not the primary identification method for horses; breed registration papers, microchips, or a detailed description on the CVI are more commonly used.

Pro Tip: If you raise multiple species, keep a separate identification file for each. Sheep and goat scrapie tags, cattle 840 RFID tags, and swine premises tags each come from different sources and have different recordkeeping requirements.

Where to Get Official Ear Tags in West Virginia

West Virginia producers have several routes to obtain official ear tags, including free options through the state and USDA programs.

WVDA will provide a limited number of free 840 RFID tags for official identification to each West Virginia producer (various species) with a valid premise identification number per calendar year. These tags are contingent upon yearly funding. WVDA also has free 840 RFID tags provided by the USDA for usage in West Virginia cattle. To request tags or a premises ID, contact the WVDA Animal Health Office at 304-558-2214.

Accredited West Virginia veterinarians are also provided 840 RFID official brucellosis calfhood vaccination tags. If you vaccinate calves for brucellosis through an accredited vet, the OCV tag applied during that process serves as official identification.

For producers who need more tags than the state allotment covers, commercial vendors are an option. RFID 840 tags cost between $2 and $5 per tag, depending on the manufacturer, tag style, and order quantity. Three major manufacturers produce approved 840 tags: Allflex (Dallas, TX), Datamars (Temple, TX), and Y-Tex (Cody, WY). You must have a valid PIN to place an order directly with any of these manufacturers or their authorized distributors.

For sheep and goat producers, first-time participants in the sheep and goat identification program can receive up to 100 plastic flock ID tags free of charge from the National Scrapie Eradication Program. To request a flock ID and initial tags, contact USDA APHIS at 866-873-2824.

Species	Tag Type	Free Source	Commercial Option
Cattle / Bison	840 RFID (EID)	WVDA Animal Health Office (304-558-2214)	Allflex, Datamars, Y-Tex
Sheep / Goats	Scrapie Flock ID Tag or 840 RFID	USDA NSEP (up to 100 tags for first-time participants)	USDA-approved vendors (requires Flock ID)
Swine	840 RFID (sows / exhibition)	USDA APHIS no-cost RFID program; WVDA	Online distributors of approved 840 swine tags
Captive Cervids	840 RFID	WVDA (25–30 tags/year per producer)	Approved 840 tag manufacturers

How and When to Apply Ear Tags in West Virginia

Timing matters when it comes to tagging. You should apply official identification well before an animal is scheduled to move — not at the loading dock the morning of transport. Apply the official tag well before movement — for example, at processing, preconditioning, or prior to sale or shipment — to avoid delays.

Proper placement improves tag retention and reduces the chance of losing identification before the animal reaches its destination. Place the tag in the middle third of the ear, between the two cartilage ribs, avoiding blood vessels. Follow brand-specific instructions for the applicator you are using.

Each tag style requires a matched applicator. For APHIS-provided tags, you will need to purchase a compatible applicator. Plastic Shearwell tags require the V6 Sheep SET Tag Applicator. For cattle 840 tags, check with your tag manufacturer or distributor to confirm which applicator is compatible with the specific tag model you ordered — HDX and FDX tags may use different tools.

• Clean the applicator and the ear before tagging to reduce infection risk.
• Check that the tag is fully closed and seated firmly before the animal leaves the chute.
• Record the tag number, animal description, and date of application immediately after tagging.
• If an animal loses its official tag, contact your accredited veterinarian or the WVDA Animal Health Office to obtain a replacement and update your records.

West Virginia livestock markets that have signed tagging site agreements with WVDA can apply official identification on arrival for animals that arrive untagged. Seven of West Virginia’s eight livestock markets have signed WVDA tagging site agreements, taking over the identification and recordkeeping for interstate movement traceability. However, relying on a market to tag your animals may result in fees and delays, so tagging at home before transport is the better practice.

Ear Tag Requirements for Interstate Movement in West Virginia

Moving livestock across state lines triggers both federal identification requirements and West Virginia’s import rules. Whether you are sending animals out of state or receiving animals from another state, both sides of the transaction involve documentation and identification checks.

When covered animals move interstate, unless otherwise exempt, they must be officially identified and accompanied by an interstate certificate of veterinary inspection (ICVI) or other movement document agreed upon by both the sending and receiving states.

West Virginia’s import requirements for 2026 specify documentation standards for incoming livestock. CVIs expire after 30 days of issuance. Make sure the CVI is current at the time of arrival, not just at the time of departure. The tag numbers for all officially identified animals must appear on the CVI.

For cattle moving to slaughter, a streamlined option exists. Cattle going directly to a USDA-inspected slaughter facility can move on only a USDA back tag. This is the one scenario where a full 840 RFID tag is not required for interstate movement of cattle.

Captive cervid imports into West Virginia carry additional requirements beyond a CVI and ear tags. Only cervids from a herd that has had no tuberculosis reactors found during a complete herd test for tuberculosis on all animals six months of age and older within the 12 months prior to importation, and that have had a negative tuberculosis test within two months prior to importation, and a negative brucellosis test within one month prior to importation, are eligible for entry.

If you move cattle to an adjacent state for seasonal grazing without a change of ownership, a special provision may apply. Cattle moving temporarily to an adjacent state for grazing purposes that do not change ownership must be officially identified but do not require a CVI. A signed Commuter Herd Agreement must be in place with both states before cattle move in this manner.

For producers who also transport animals in their own trailers, it is worth reviewing livestock trailer requirements in Virginia, which borders West Virginia and shares many of the same interstate movement corridors.

Recordkeeping Requirements for Ear-Tagged Animals in West Virginia

Applying an ear tag is only half the compliance equation. Maintaining accurate records of which tags were applied to which animals — and when — is a federal requirement under the Animal Disease Traceability regulations.

The 2024 final rule also clarified certain record retention and record access requirements and revised some requirements pertaining to slaughter cattle. Producers, dealers, and livestock markets all have distinct recordkeeping obligations under 9 CFR Part 86.

At the producer level, you are expected to record the official tag number, species, breed, sex, approximate age, and the date the tag was applied for each officially identified animal. If you apply a new EID tag to an already officially identified animal, you must record both tag numbers and the date the new tag was applied. This dual-tag recording requirement matters when an animal loses its original tag and is retagged before movement.

Animal disease traceability information is housed in official federal and state databases. Those databases are not publicly available. They are only accessible to federal and state government officials who are responsible for dealing with high-impact animal diseases and who have passed extensive security screening and training to ensure data is handled correctly. Your tag and premises records feed into this system but remain protected from public disclosure.

WVDA Animal Health uses traceability data for disease traces, tissue residue and/or compliance investigations, and lost or stolen animal inquiries. Keeping your own farm records in sync with what WVDA and USDA have on file is the best way to resolve any discrepancy quickly if your animals are ever part of a disease investigation.

Practical steps to keep your records current:

1. Record each tag number at the time of application, not days later from memory.
2. Keep a log that includes the animal’s description, tag number, date tagged, and intended destination or use.
3. Retain copies of all CVIs and interstate movement documents for at least three years.
4. Update records promptly if an animal loses a tag and is retagged with a new number.
5. Confirm that your premises ID is current and on file with the WVDA before ordering new tags each year.

Key Insight: WVDA records tag distributions in the USAHerds and AIMS systems tied to your Premises ID. If your farm records and the state database do not match, it can slow down a disease trace or create compliance questions during a market inspection. Keep your own records as detailed as the state’s.

For more information about West Virginia agricultural regulations and animal ownership laws, see our guides on dog bite laws in West Virginia, hedgehog ownership laws in West Virginia, and rabies vaccine requirements in West Virginia. Producers who also hold hunting or fishing privileges on their land may find our guides on hunting license requirements in West Virginia and fishing license requirements in West Virginia useful as well.

The WVDA Animal Health Division is your primary point of contact for all ear tag and traceability questions in the state. Reach them at 304-558-2214 or visit the West Virginia Department of Agriculture ADT page for the most current tag availability, premises registration instructions, and import requirement updates. The USDA APHIS Official Eartags Criteria and Options document (updated January 2025) is the authoritative federal reference for tag specifications across all species.