Total Reports
31
Below-median volume
Horse /
Breed profile · FDA CVM July 2026 extract
Welsh Mountain Pony adverse-event record
Adverse-event filings for Welsh Mountain Pony (Horse) in the FDA Center for Veterinary Medicine openFDA extract. Browse horse breeds, reactions, and outcomes below.
- #320 of 510
- by report volume (all breeds)
- 31
- FDA CVM reports on file
- 9.7%
- death-coded share of reports
- 4
- INEFFECTIVE, GASTRIC ULCER(S) - top reaction
How the 31 reports break down
By recorded gender -- every report on file for Welsh Mountain Pony, no filtering.
Annual report volume
Data updated September 2026
The verdict
According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Welsh Mountain Pony ranks #318 of 510 by total reports (31). Death-coded-share rank requires at least 50 reports. 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)
- #318
- This breed, reports of 510
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. Welsh Mountain Pony has 31 reports now versus 30 in that prior snapshot: 1 more (3.3%).
- Report change
- +1
- Death-coded reports
- +0
- Death-coded share
- −0.3 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 Welsh Mountain Pony changesDeaths Reported
3
of 31 reports
Death-coded share of reports
9.7%
9.7% death-coded
Avg Age at Report
16.2 yr
337.8 kg avg weight
Death-Coded Outcome Share
Welsh Mountain Pony death-coded reports 9.7%
Cross-breed median
9.7% of 31 welsh mountain pony 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.
Average weight at time of report: 337.8 kg (744.8 lbs)
Top Reported Reactions
INEFFECTIVE, GASTRIC ULCER(S) 4
Lack of efficacy - NOS 4
Diarrhoea 3
Loose stool 3
Death by euthanasia 3
Most Referenced Drugs
Pergolide Mesylate 10
Omeprazole 10
Polysulfated Glycosaminoglycan 3
Ivermectin + Praziquantel 2
Misoprostal 2
Outcome Breakdown
Recovered/Normal
13 (41.9%)
Outcome Unknown
11 (35.5%)
Ongoing
4 (12.9%)
Euthanized
3 (9.7%)
Gender Distribution
Male 14 (45.2%)
Female 14 (45.2%)
Unknown 3 (9.7%)
Reports by Year
| Year | Reports | Trend |
|---|---|---|
| 2013 | 1 | |
| 2014 | 2 | |
| 2015 | 3 | |
| 2017 | 2 | |
| 2018 | 3 | |
| 2019 | 4 | |
| 2020 | 1 | |
| 2022 | 1 | |
| 2023 | 3 | |
| 2024 | 5 | |
| 2025 | 5 | |
| 2026 | 1 | |
Welsh Mountain Pony: high death-coded share in the FDA CVM extract
Signature read: Welsh Mountain Pony's 9.7% death-coded share is in the upper third of the ≥50-report cohort (median 4.8%). According to FDA CVM filings indexed on PlainBreed as of July 2026 extract, Welsh Mountain Pony sits at #320 of 510 by report volume among all breeds and #33 of 55 among horse breeds, with 31 reports and 3 (9.7%) death-coded. Mean age at report: 16.2 years, average weight 337.8 kg (744.8 lbs).
Top reported signs: INEFFECTIVE, GASTRIC ULCER(S) (4), Lack of efficacy - NOS (4), Diarrhoea (3). Most-referenced drug: Pergolide Mesylate (10 reports), followed by Omeprazole (10) and Polysulfated Glycosaminoglycan (3).
Outcome coding on 31 status-recorded reports is dominated by Recovered/Normal (41.9%). Annual submissions ranged 1-2,026 across 12 years on file.
Horse Breeds With a Similar Report Volume
Showing 6 of 54 horse breeds in our dataset, ranked by closest report volume.
Irish Cob (Tinker)
31 reports · 3.2% death-coded
Pura Raza Española (Andalusian)
32 reports · 9.4% death-coded
Pony of the Americas
33 reports · 21.2% death-coded
Shetland Pony
33 reports · 21.2% death-coded
Standardbred - American
29 reports · 41.4% death-coded
Rocky Mountain Horse
36 reports · 8.3% death-coded
Nationwide breeds with similar profiles
Two openFDA-derived peer sets for Welsh Mountain Pony, both outside the Horse family so the neighborhoods are not species containment (the similar-volume list above stays within species).
Similar average weight
Nearest other-species breeds by reported average weight (337.8 kg here).
What to do with this horse
- Compare Welsh Mountain Pony's report volume and death-coded share against similar-volume breeds nationwide. See similar breeds
- Read how death-coded share differs from a mortality rate before drawing conclusions. Breed-specific risks guide
- Browse every horse breed we track for comparison. All horse breeds
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 Welsh Mountain Pony? ▼
There are 31 adverse event reports involving Welsh Mountain Pony in the FDA database, of which 3 were death-coded (9.7% 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, Welsh Mountain Pony ranks #320 of 510 by report volume among all breeds PlainBreed indexes (#33 of 55 among horse breeds).
Where does Welsh Mountain Pony sit among other breeds in PlainBreed's corpus? ▼
According to FDA CVM report volume, Welsh Mountain Pony is #320 of 510 breeds indexed on PlainBreed (same ordering as the most-reported-breeds ranking). Inside Horse, it is #33 of 55. It has fewer than 50 reports, so it is outside the death-rate ranking cohort (≥50 reports). These are placement ranks in the reporting corpus, not clinical risk scores.
What are the most common adverse reactions reported for Welsh Mountain Pony? ▼
The most commonly reported adverse reactions for Welsh Mountain Pony are INEFFECTIVE, GASTRIC ULCER(S) (4 reports), Lack of efficacy - NOS (4 reports), Diarrhoea (3 reports), Loose stool (3 reports), Death by euthanasia (3 reports).
What drugs are most frequently associated with Welsh Mountain Pony adverse events? ▼
The drugs most frequently referenced in Welsh Mountain Pony adverse event reports are Pergolide Mesylate (10 reports), Omeprazole (10 reports), Polysulfated Glycosaminoglycan (3 reports), Ivermectin + Praziquantel (2 reports), Misoprostal (2 reports).
What is the average age of Welsh Mountain Pony in adverse event reports? ▼
The average age of Welsh Mountain Pony at the time of adverse event reports is 16.2 years, with an average weight of 337.8 kg (744.8 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 Welsh Mountain Pony (Horse), extract as of July 2026 extract. 31 reports · 3 death-coded (9.7% of reports, not a mortality rate) · #320 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 →