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Breed profile · FDA CVM July 2026 extract

Terrier - Yorkshire adverse-event record

Adverse-event filings for Terrier - Yorkshire (Dog) in the FDA Center for Veterinary Medicine openFDA extract. Browse dog breeds, reactions, and outcomes below.

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#8 of 510
by report volume (all breeds)
24,924
FDA CVM reports on file
3.7%
death-coded share of reports
#193 of 275
by death-coded share (≥50 reports)

How the 24,924 reports break down

By recorded gender -- every report on file for Terrier - Yorkshire, no filtering.

Annual report volume

Annual adverse-event report trend Yearly FDA CVM adverse-event report counts for this breed. 1,496 1,122 748 374 0 2019 2020 2021 2022 2023 2024 2025 2026 Reports filed Death-coded reports
Annual report volume for Terrier - Yorkshire drawn from FDA CVM filings.

Data updated September 2026

The verdict

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Terrier - Yorkshire ranks #8 of 510 by total reports (24,924) and #193 of 275 by death-coded share (3.7%). 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)
#8
This breed, reports of 510
#193
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. Terrier - Yorkshire has 24,924 reports now versus 24,712 in that prior snapshot: 212 more (0.9%).

Report change
+212
Death-coded reports
+13
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 - Yorkshire changes

Total Reports

24,924

Highest-reported breed

Deaths Reported

928

of 24,924 reports

Death-coded share of reports

3.7%

Below-median death-coded share

Avg Age at Report

5.7 yr

4.2 kg avg weight

Breed Safety Scorecard

B+ (78/100)

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 B
3.7%

Share of reports coded as a fatality

Euthanasia rate A-
1.5%

Share of reports resulting in euthanasia

Full recovery rate A
37.7%

Share of reports coded "Recovered/Normal"

5-year trend B
-11%

Change in annual report volume over the last 5 complete years

Death-Coded Outcome Share

Terrier - Yorkshire death-coded reports 3.7%
Cross-breed median

3.7% of 24,924 terrier - yorkshire 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 Terrier - Yorkshire's death-coded share sits among indexed breeds

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

4% 30th percentile Higher share than 30% of 275 indexed breeds

5%–10%: 1 indexed breeds (0%). This entry sits in this band. 20%–25%: 2 indexed breeds (1%). Above this entry. 25%–30%: 3 indexed breeds (1%). Above this entry. 30%–35%: 4 indexed breeds (1%). Above this entry. 35%–40%: 5 indexed breeds (2%). Above this entry. 40%–45%: 6 indexed breeds (2%). Above this entry. 45%–50%: 3 indexed breeds (1%). Above this entry. 50%–55%: 7 indexed breeds (3%). Above this entry. 55%–60%: 7 indexed breeds (3%). Above this entry. 60%–65%: 21 indexed breeds (8%). Above this entry. 65%–70%: 11 indexed breeds (4%). Above this entry. 70%–75%: 15 indexed breeds (5%). Above this entry. 75%–80%: 13 indexed breeds (5%). Above this entry. 80%–85%: 11 indexed breeds (4%). Above this entry. 85%–90%: 12 indexed breeds (4%). Above this entry. 90%–95%: 12 indexed breeds (4%). Above this entry. 95%–100%: 142 indexed breeds (52%). Above this entry. Terrier - Yorkshire 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.

Terrier - Yorkshire among report-volume vs. death-rate peers

Every breed shown has at least 50 filed reports. Volume reflects how often a breed is reported, not how common it is; death rate is the share of a breed's own reports coded as a death outcome.

Source: FDA openFDA Animal & Veterinary Adverse Events database 2×2 strategic matrix plotting 30 entities by Total Reports (X) and Death Rate (%) (Y), with a crosshair dividing the plot into four quadrants. High volume, high death rateLow volume, high death rateHigh volume, low death rateLow volume, low death rate 020,00040,00060,00080,000100,000 0%5%10%15% Total Reports Death Rate (%) Terrier - Yorkshire vs. all breeds, report volume and death-coded share Retriever - Labrador-93675, 3.7%Crossbred Canine/dog-70591, 3.2%Domestic Shorthair-65226, 7.2%Dog (unknown)-48820, 8.8%Retriever - Golden-35980, 3.7%Shepherd Dog - German-32220, 4.4%Chihuahua-31521, 4.2%Terrier - Yorkshire-24924, 3.7%Shih Tzu-24405, 3.6%Boxer (German Boxer)-19405, 4.4%Beagle-17970, 3.6%Pit Bull-17865, 3.1%Shepherd Dog - Australian-16274, 3.7%Terrier (unspecified)-14058, 3.1%Maltese-13940, 3.2%Dachshund (unspecified)-13512, 4.6%Cat (unknown)-13248, 9.3%Terrier - Jack Russell-10423, 3.7%Collie - Border-10130, 4.3%Siberian Husky-9811, 4.5%Domestic Longhair-9615, 7%Pug-9224, 5.2%Spitz - German Pomeranian-9086, 4.9%Terrier - Bull - American Pit-8769, 4.7%Cattle Dog - Australian (blue heeler, red heeler, Queensland cattledog)-7871, 3.6%Terrier - Boston-7737, 4.5%Spaniel - Cocker American-7640, 4%Domestic (unspecified)-7576, 13.4%Poodle (unspecified)-7534, 3.4%Schnauzer - Miniature-7513, 4.4%
Source: FDA openFDA Animal & Veterinary Adverse Events database
Average weight at time of report: 4.2 kg (9.3 lbs)

Top Reported Reactions

Vomiting 6,371
Lethargy (see also Central nervous system depression in 'Neurological') 2,984
Emesis 2,852
Lack of efficacy (ectoparasite) - flea 2,432
Diarrhoea 2,341
Seizure NOS 1,142
Lack of efficacy - NOS 1,087
Anorexia 988
Shaking 836
Behavioural disorder NOS 782
Ataxia 720
Not eating 716
Emesis (multiple) 706
Pruritus 656
Overdose 610

Most Referenced Drugs

Milbemycin Oxime + Spinosad 5,204
Spinosad 2,769
Afoxolaner 1,563
Ivermectin + Pyrantel As Pamoate Salt 1,332
Moxidectin 1,194
Pyrantel Pamoate;Sarolaner 1,172
Fluralaner Chew Tablets 1,128
Oclacitinib Maleate 921
Fluralaner 13.64% 12-Week Chew 773
Sarolaner 747
Selamectin 654
Imidacloprid + Moxidectin 570
Trilostane 558
Milbemycin Oxime + Praziquantel 539
Nitenpyram 481

Outcome Breakdown

Recovered/Normal
9,393 (40.5%)
Outcome Unknown
6,879 (29.7%)
Ongoing
5,236 (22.6%)
Recovered with Sequela
748 (3.2%)
Died
557 (2.4%)
Euthanized
371 (1.6%)

Gender Distribution

Female 12,318 (49.4%)
Male 11,914 (47.8%)
Unknown 613 (2.5%)
Mixed 79 (0.3%)

Reports by Year

Year Reports Trend
2010 885
2011 1,411
2012 2,131
2013 2,107
2014 2,020
2015 2,013
2016 1,903
2017 1,982
2018 1,609
2019 1,496
2020 1,439
2021 1,234
2022 1,112
2023 1,102
2024 1,224
2025 1,103
2026 153

Terrier - Yorkshire: low death-coded share in the FDA CVM extract

Signature read: 24,924 reports place Terrier - Yorkshire in the upper third of breed filing volume (#8 of 510). According to FDA CVM filings indexed on PlainBreed as of July 2026 extract, Terrier - Yorkshire sits at #8 of 510 by report volume among all breeds and #7 of 298 among dog breeds, with 24,924 reports and 928 (3.7%) death-coded. On death-coded share among breeds with ≥50 reports, it ranks #193 of 275. Mean age at report: 5.7 years, average weight 4.2 kg (9.3 lbs).

Top reported signs: Vomiting (6,371), Lethargy (see also Central nervous system depression in 'Neurological') (2,984), Emesis (2,852). Most-referenced drug: Milbemycin Oxime + Spinosad (5,204 reports), followed by Spinosad (2,769) and Afoxolaner (1,563).

Outcome coding on 23,184 status-recorded reports is dominated by Recovered/Normal (40.5%). Annual submissions ranged 153-2,026 across 17 years on file.

Terrier - Yorkshire Reporting Concentration Profile

Terrier - Yorkshire is a high-volume FDA CVM cohort (24,924 reports) - enough filings to measure how concentrated the reaction and drug mix is, not just the headline totals. Across 20 named reaction terms in the stored top list, the leading three (Vomiting, Lethargy (see also Central nervous system depression in 'Neurological'), Emesis) account for 43.7% of listed reaction mentions. The Herfindahl index on that list is 0.099 (1.0 = a single reaction owns every mention; lower = a broader clinical mix).

On the drug side, 20 referenced products appear in the top list; the leading three (Milbemycin Oxime + Spinosad, Spinosad, Afoxolaner) cover 45.0% of those mentions. That multi-product footprint is the profile thin-report breeds cannot show - their pages stop at a short bar list because the sample cannot support a concentration read.

Outcome coding on 23,184 status-recorded filings splits roughly 4.0% severe (died or euthanized - 928 reports) versus 43.7% recovered or recovered-with-sequela (10,141). Read that split next to the 3.7% death-coded share above - both track reporting severity bias in a popular breed, not a proven mortality rate.

Peak filing year was 2012 (2,131 reports); the lightest year on file was 2026 (153). From 2024 to 2025, annual volume fell 9.9% (1,224 → 1,103). Year-to-year swings at this volume usually track product launches, owner awareness, and reporting campaigns more than sudden breed-health shocks.

Dog Breeds With a Similar Report Volume

Showing 6 of 297 dog breeds in our dataset, ranked by closest report volume.

Shih Tzu
24,405 reports · 3.6% death-coded
Boxer (German Boxer)
19,405 reports · 4.4% death-coded
Chihuahua
31,521 reports · 4.2% death-coded
Beagle
17,970 reports · 3.6% death-coded
Pit Bull
17,865 reports · 3.1% death-coded
Shepherd Dog - German
32,220 reports · 4.4% death-coded

Nationwide breeds with similar profiles

High-volume peer sets for Terrier - Yorkshire drawn from openFDA outside the Dog 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 (3.7% death-coded here).

British cat 3.8% · Cat American Curl Shorthair 3.5% · Cat Siberian 4.2% · Cat Oriental 3.1% · Cat

Similar average weight

Nearest other-species breeds by reported average weight (4.2 kg here).

Himalayan 4.2 kg · Cat Abyssinian cat 4.2 kg · Cat Burmese 4.2 kg · Cat Tonkinese 4.2 kg · Cat

What to do with this dog

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 - Yorkshire? ▼
There are 24,924 adverse event reports involving Terrier - Yorkshire in the FDA database, of which 928 were death-coded (3.7% 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, Terrier - Yorkshire ranks #8 of 510 by report volume among all breeds PlainBreed indexes (#7 of 298 among dog breeds).
Where does Terrier - Yorkshire sit among other breeds in PlainBreed's corpus? ▼
According to FDA CVM report volume, Terrier - Yorkshire is #8 of 510 breeds indexed on PlainBreed (same ordering as the most-reported-breeds ranking). Inside Dog, it is #7 of 298. Among breeds with at least 50 reports, its death-coded share ranks #193 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 Terrier - Yorkshire? ▼
The most commonly reported adverse reactions for Terrier - Yorkshire are Vomiting (6,371 reports), Lethargy (see also Central nervous system depression in 'Neurological') (2,984 reports), Emesis (2,852 reports), Lack of efficacy (ectoparasite) - flea (2,432 reports), Diarrhoea (2,341 reports).
What drugs are most frequently associated with Terrier - Yorkshire adverse events? ▼
The drugs most frequently referenced in Terrier - Yorkshire adverse event reports are Milbemycin Oxime + Spinosad (5,204 reports), Spinosad (2,769 reports), Afoxolaner (1,563 reports), Ivermectin + Pyrantel As Pamoate Salt (1,332 reports), Moxidectin (1,194 reports).
What is the average age of Terrier - Yorkshire in adverse event reports? ▼
The average age of Terrier - Yorkshire at the time of adverse event reports is 5.7 years, with an average weight of 4.2 kg (9.3 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 - Yorkshire (Dog), extract as of July 2026 extract. 24,924 reports · 928 death-coded (3.7% of reports, not a mortality rate) · #8 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 →