Total Reports
27
Below-median volume
Dog /
Breed profile · FDA CVM July 2026 extract
Terrier - Sealyham adverse-event record
Adverse-event filings for Terrier - Sealyham (Dog) in the FDA Center for Veterinary Medicine openFDA extract. Browse dog breeds, reactions, and outcomes below.
- #334 of 510
- by report volume (all breeds)
- 27
- FDA CVM reports on file
- 7.4%
- death-coded share of reports
- 4
- Pain NOS - top reaction
How the 27 reports break down
By recorded gender -- every report on file for Terrier - Sealyham, no filtering.
Annual report volume
Data updated September 2026
The verdict
According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Terrier - Sealyham ranks #331 of 510 by total reports (27). 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)
- #331
- 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. Terrier - Sealyham has 27 reports now versus 27 in that prior snapshot: 0 the same number of (0.0%).
- Report change
- +0
- Death-coded reports
- +0
- 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 Terrier - Sealyham changesDeaths Reported
2
of 27 reports
Death-coded share of reports
7.4%
7.4% death-coded
Avg Age at Report
6.6 yr
12.4 kg avg weight
Death-Coded Outcome Share
Terrier - Sealyham death-coded reports 7.4%
Cross-breed median
7.4% of 27 terrier - sealyham 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: 12.4 kg (27.3 lbs)
Top Reported Reactions
Pain NOS 4
Lethargy (see also Central nervous system depression in 'Neurological') 4
Vomiting 3
Behavioural disorder NOS 3
Depression 3
Most Referenced Drugs
Milbemycin Oxime + Spinosad 4
Afoxolaner 3
Milbemycin/Lufenuron Tablets 3
Milbemycin 2
Trilostane 2
Outcome Breakdown
Recovered/Normal
10 (47.6%)
Ongoing
5 (23.8%)
Outcome Unknown
3 (14.3%)
Died
1 (4.8%)
Recovered with Sequela
1 (4.8%)
Euthanized
1 (4.8%)
Gender Distribution
Female 14 (51.9%)
Male 13 (48.1%)
Reports by Year
| Year | Reports | Trend |
|---|---|---|
| 2010 | 5 | |
| 2012 | 3 | |
| 2014 | 4 | |
| 2016 | 1 | |
| 2018 | 2 | |
| 2019 | 1 | |
| 2020 | 1 | |
| 2021 | 3 | |
| 2022 | 2 | |
| 2023 | 3 | |
| 2024 | 1 | |
| 2025 | 1 | |
Terrier - Sealyham: high death-coded share in the FDA CVM extract
Signature read: Terrier - Sealyham's 7.4% 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, Terrier - Sealyham sits at #334 of 510 by report volume among all breeds and #223 of 298 among dog breeds, with 27 reports and 2 (7.4%) death-coded. Mean age at report: 6.6 years, average weight 12.4 kg (27.3 lbs).
Top reported signs: Pain NOS (4), Lethargy (see also Central nervous system depression in 'Neurological') (4), Vomiting (3). Most-referenced drug: Milbemycin Oxime + Spinosad (4 reports), followed by Afoxolaner (3) and Milbemycin/Lufenuron Tablets (3).
Outcome coding on 21 status-recorded reports is dominated by Recovered/Normal (47.6%). Annual submissions ranged 1-2,025 across 12 years on file.
Dog Breeds With a Similar Report Volume
Showing 6 of 297 dog breeds in our dataset, ranked by closest report volume.
Coonhound - American English
27 reports · 0.0% death-coded
Setter - Irish Red and White
27 reports · 0.0% death-coded
Terrier - Dandie Dinmont
27 reports · 3.7% death-coded
Basset - Griffon Vendeen Small
28 reports · 7.1% death-coded
Jindo
26 reports · 0.0% death-coded
Pudelpointer
28 reports · 0.0% death-coded
Nationwide breeds with similar profiles
Two openFDA-derived peer sets for Terrier - Sealyham, both outside the Dog 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 (12.4 kg here).
What to do with this dog
- Compare Terrier - Sealyham'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 dog breed we track for comparison. All dog 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 Terrier - Sealyham? ▼
There are 27 adverse event reports involving Terrier - Sealyham in the FDA database, of which 2 were death-coded (7.4% 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, Terrier - Sealyham ranks #334 of 510 by report volume among all breeds PlainBreed indexes (#223 of 298 among dog breeds).
Where does Terrier - Sealyham sit among other breeds in PlainBreed's corpus? ▼
According to FDA CVM report volume, Terrier - Sealyham is #334 of 510 breeds indexed on PlainBreed (same ordering as the most-reported-breeds ranking). Inside Dog, it is #223 of 298. 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 Terrier - Sealyham? ▼
The most commonly reported adverse reactions for Terrier - Sealyham are Pain NOS (4 reports), Lethargy (see also Central nervous system depression in 'Neurological') (4 reports), Vomiting (3 reports), Behavioural disorder NOS (3 reports), Depression (3 reports).
What drugs are most frequently associated with Terrier - Sealyham adverse events? ▼
The drugs most frequently referenced in Terrier - Sealyham adverse event reports are Milbemycin Oxime + Spinosad (4 reports), Afoxolaner (3 reports), Milbemycin/Lufenuron Tablets (3 reports), Milbemycin (2 reports), Trilostane (2 reports).
What is the average age of Terrier - Sealyham in adverse event reports? ▼
The average age of Terrier - Sealyham at the time of adverse event reports is 6.6 years, with an average weight of 12.4 kg (27.3 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 Terrier - Sealyham (Dog), extract as of July 2026 extract. 27 reports · 2 death-coded (7.4% of reports, not a mortality rate) · #334 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 →