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Breed profile · FDA CVM July 2026 extract

Horse (unknown) adverse-event record

Adverse-event filings for Horse (unknown) (Horse) in the FDA Center for Veterinary Medicine openFDA extract. Browse horse breeds, reactions, and outcomes below.

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#77 of 510
by report volume (all breeds)
2,370
FDA CVM reports on file
10.0%
death-coded share of reports
#48 of 275
by death-coded share (≥50 reports)

How the 2,370 reports break down

By recorded gender -- every report on file for Horse (unknown), no filtering.

Annual report volume

Annual adverse-event report trend Yearly FDA CVM adverse-event report counts for this breed. 180 135 90 45 0 2019 2020 2021 2022 2023 2024 2025 2026 Reports filed Death-coded reports
Annual report volume for Horse (unknown) drawn from FDA CVM filings.

Data updated September 2026

The verdict

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Horse (unknown) ranks #77 of 510 by total reports (2,370) and #48 of 275 by death-coded share (10.0%). National dual: Retriever - Labrador is #1 of 510 by total adverse-event reports (93,675) at death-coded-share rank 195 of 275 breeds with at least 50 reports (3.7%); separately, Atlantic Salmon (Salmo salar) is #1 highest death-coded share at 99.0% (report rank #233).

93,675
Retriever - Labrador reports (#1)
99.0%
Atlantic Salmon (Salmo salar) death share (#1)
#77
This breed, reports of 510
#48
This breed, death share of 275

Report volume reflects how common a breed or drug is and how often owners and vets file — not actual risk. Death-coded share ranks are limited to entries with enough reports to be meaningful. The two maps do not agree at #1.

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Horse (unknown) has 2,370 reports now versus 2,346 in that prior snapshot: 24 more (1.0%).

Report change
+24
Death-coded reports
+3
Death-coded share
+0.0 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to Horse (unknown) changes

Total Reports

2,370

High report volume

Deaths Reported

237

of 2,370 reports

Death-coded share of reports

10.0%

High death-coded share

Avg Age at Report

13.8 yr

393.1 kg avg weight

Breed Safety Scorecard

F (28/100)

A weighted composite across 4 of 4 dimensions, each benchmarked against every tracked breed with at least 200 reports (n=185). Dimensions with insufficient data drop out and their weight redistributes to the rest, so a missing input never silently deflates the score.

Death rate F
10.0%

Share of reports coded as a fatality

Euthanasia rate F
2.8%

Share of reports resulting in euthanasia

Full recovery rate D
26.5%

Share of reports coded "Recovered/Normal"

5-year trend D
+18%

Change in annual report volume over the last 5 complete years

Death-Coded Outcome Share

Horse (unknown) death-coded reports 10.0%
Cross-breed median

10.0% of 2,370 horse (unknown) reports involved a death outcome.

How to read this number

Read alongside breed popularity, veterinary access, and owner awareness, these shape how many events ever reach the FDA. The comparison line marks the cross-breed median death-coded share (4.8%) among breeds with 50 or more reports; values above it suggest higher reporting bias toward severe outcomes, not necessarily higher true mortality.

Where Horse (unknown)'s death-coded share sits among indexed breeds

Death-coded share of FDA CVM reports, breeds with ≥50 reports (July 2026 extract)

10% 83rd percentile Higher share than 83% of 275 indexed breeds

5%–10%: 1 indexed breeds (0%). Below this entry. 20%–25%: 2 indexed breeds (1%). Below this entry. 25%–30%: 3 indexed breeds (1%). Below this entry. 30%–35%: 4 indexed breeds (1%). Below this entry. 35%–40%: 5 indexed breeds (2%). Below this entry. 40%–45%: 6 indexed breeds (2%). Below this entry. 45%–50%: 3 indexed breeds (1%). Below this entry. 50%–55%: 7 indexed breeds (3%). Below this entry. 55%–60%: 7 indexed breeds (3%). Below this entry. 60%–65%: 21 indexed breeds (8%). Below this entry. 65%–70%: 11 indexed breeds (4%). Below this entry. 70%–75%: 15 indexed breeds (5%). Below this entry. 75%–80%: 13 indexed breeds (5%). Below this entry. 80%–85%: 11 indexed breeds (4%). Below this entry. 85%–90%: 12 indexed breeds (4%). Below this entry. 90%–95%: 12 indexed breeds (4%). Below this entry. 95%–100%: 142 indexed breeds (52%). This entry sits in this band. Horse (unknown) 5% 100% every breed with ≥50 FDA reports, bucketed by value

Each bar is a band; taller bars hold more indexed breeds. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source FDA Center for Veterinary Medicine, openFDA adverse event extract (PlainBreed) · July 2026 extract

This histogram uses the same ≥50-report cohort as the highest death-coded share ranking. A higher share means more of this breed's reported events were death-coded, not a mortality rate for living animals.

Average weight at time of report: 393.1 kg (866.8 lbs)

Top Reported Reactions

Lack of efficacy - NOS 304
Death 147
INEFFECTIVE, GASTRIC ULCER(S) 141
Colic 132
Application site swelling 127
Injection site swelling 105
INEFFECTIVE, SEDATION 103
Lip oedema (see also 'Skin') 89
Diarrhoea 88
Anorexia 86
Swollen mouth 66
Behavioural disorder NOS 64
Anaphylactoid reaction 61
Hypersalivation 56
Injection site pain 55

Most Referenced Drugs

Pergolide Mesylate 264
Omeprazole 255
Ivermectin(1.55%)/Praziquantel(7.75%) Paste 174
Ivermectin, Praziquantel 160
Detomidine Hydrochloride 145
Ceftiofur Crystalline Free Acid 106
Ketamine Hydrochloride 100
Polysulfated Glycosaminoglycan 92
Firocoxib 81
Monensin Sodium 77
Ivermectin + Praziquantel 66
Omeprazole 37% Oral Paste 58
Hyaluronate Sodium 50
Ivermectin 42
Sucralfate 42

Outcome Breakdown

Outcome Unknown
967 (47.4%)
Recovered/Normal
627 (30.7%)
Ongoing
197 (9.7%)
Died
171 (8.4%)
Euthanized
67 (3.3%)
Recovered with Sequela
11 (0.5%)

Gender Distribution

Unknown 1,219 (51.4%)
Male 580 (24.5%)
Female 405 (17.1%)
Mixed 166 (7.0%)

Reports by Year

Year Reports Trend
2010 153
2011 151
2012 127
2013 155
2014 153
2015 177
2016 160
2017 126
2018 100
2019 119
2020 135
2021 153
2022 141
2023 161
2024 167
2025 180
2026 12

Horse (unknown): high death-coded share in the FDA CVM extract

Signature read: 2,370 reports place Horse (unknown) in the upper third of breed filing volume (#77 of 510). According to FDA CVM filings indexed on PlainBreed as of July 2026 extract, Horse (unknown) sits at #77 of 510 by report volume among all breeds and #2 of 55 among horse breeds, with 2,370 reports and 237 (10.0%) death-coded. On death-coded share among breeds with ≥50 reports, it ranks #48 of 275. Mean age at report: 13.8 years, average weight 393.1 kg (866.8 lbs).

Top reported signs: Lack of efficacy - NOS (304), Death (147), INEFFECTIVE, GASTRIC ULCER(S) (141). Most-referenced drug: Pergolide Mesylate (264 reports), followed by Omeprazole (255) and Ivermectin(1.55%)/Praziquantel(7.75%) Paste (174).

Outcome coding on 2,040 status-recorded reports is dominated by Outcome Unknown (47.4%). Annual submissions ranged 12-2,026 across 17 years on file.

Horse Breeds With a Similar Report Volume

Showing 6 of 54 horse breeds in our dataset, ranked by closest report volume.

Quarter Horse
2,526 reports · 11.1% death-coded
Thoroughbred
1,222 reports · 8.2% death-coded
Warmblood (unspecified)
541 reports · 7.0% death-coded
Arab
467 reports · 9.6% death-coded
Paint
386 reports · 13.7% death-coded
Horse (other)
296 reports · 9.8% death-coded

Nationwide breeds with similar profiles

High-volume peer sets for Horse (unknown) drawn from openFDA outside the Horse family so the neighborhoods are not species containment (the similar-volume list above stays within species).

Similar death-coded share

Nearest other-species breeds with ≥50 reports (10.0% death-coded here).

Domestic ferret (Pet ferret) 9.9% · Ferret Mastiff (unspecified) 9.8% · Dog Persian 9.7% · Cat Cat (other) 9.7% · Cat

Similar average weight

Nearest other-species breeds by reported average weight (393.1 kg here).

Ayrshire 400.0 kg · Cattle Other Equids (other) 366.8 kg · Other Equids Longhorn 362.9 kg · Cattle British White 428.4 kg · Cattle

What to do with this horse

A report does not prove a drug caused the reaction, and popular breeds simply generate more reports.

Frequently Asked Questions

How many FDA adverse event reports involve Horse (unknown)? ▼
There are 2,370 adverse event reports involving Horse (unknown) in the FDA database, of which 237 were death-coded (10.0% of those reports). That is a share of REPORTED events, not a mortality rate for the breed: adverse events reach the FDA when something goes wrong, so the denominator is reports, never the population of animals. According to the same FDA CVM extract, Horse (unknown) ranks #77 of 510 by report volume among all breeds PlainBreed indexes (#2 of 55 among horse breeds).
Where does Horse (unknown) sit among other breeds in PlainBreed's corpus? ▼
According to FDA CVM report volume, Horse (unknown) is #77 of 510 breeds indexed on PlainBreed (same ordering as the most-reported-breeds ranking). Inside Horse, it is #2 of 55. Among breeds with at least 50 reports, its death-coded share ranks #48 of 275 (same cohort as highest-death-rate). These are placement ranks in the reporting corpus, not clinical risk scores.
What are the most common adverse reactions reported for Horse (unknown)? ▼
The most commonly reported adverse reactions for Horse (unknown) are Lack of efficacy - NOS (304 reports), Death (147 reports), INEFFECTIVE, GASTRIC ULCER(S) (141 reports), Colic (132 reports), Application site swelling (127 reports).
What drugs are most frequently associated with Horse (unknown) adverse events? ▼
The drugs most frequently referenced in Horse (unknown) adverse event reports are Pergolide Mesylate (264 reports), Omeprazole (255 reports), Ivermectin(1.55%)/Praziquantel(7.75%) Paste (174 reports), Ivermectin, Praziquantel (160 reports), Detomidine Hydrochloride (145 reports).
What is the average age of Horse (unknown) in adverse event reports? ▼
The average age of Horse (unknown) at the time of adverse event reports is 13.8 years, with an average weight of 393.1 kg (866.8 lbs).

Compare a breed's report volume against how common the breed is before drawing conclusions. See our methodology for how the death-coded share and rankings are computed, or read breed-specific reporting patterns and FDA CVM reporting.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Horse (unknown) (Horse), extract as of July 2026 extract. 2,370 reports · 237 death-coded (10.0% of reports, not a mortality rate) · #77 of 510 by volume.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →