Total Reports
24,408
FDA CVM filings
Dog /
FDA CVM · 2025 release 24,408 reports on file
Terrier - Yorkshire - FDA Adverse Event Profile
Adverse-event records for Terrier - Yorkshire (Dog) from the FDA Center for Veterinary Medicine.
Data updated June 2026
The record at a glance
With 24,408 reports on file, Terrier - Yorkshire sits at #8 among dog breeds by volume; death-coded share is 3.7% (904 reports).
- #8
- most-reported dog breed
- 3.7%
- death-coded report share
- 6,294
- Vomiting - top reaction
- 5.7 yr
- average age at report
Read report counts next to breed popularity: a bigger number often just means more owners and more vet visits.
Deaths Reported
904
of 24,408 reports
Death Rate
3.7%
death-coded share
Avg Age at Report
5.7 yr
4.2 kg avg weight
Death-Coded Outcome Share
Terrier - Yorkshire death-coded reports 3.7%
Cross-breed median
3.7% of 24,408 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 (about 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: 4.2 kg (9.3 lbs)
Top Reported Reactions
Vomiting 6,294
Lethargy (see also Central nervous system depression in 'Neurological') 2,984
Emesis 2,851
Lack of efficacy (ectoparasite) - flea 2,358
Diarrhoea 2,290
Seizure NOS 1,108
Lack of efficacy - NOS 1,065
Anorexia 981
Shaking 818
Behavioural disorder NOS 773
Ataxia 708
Not eating 680
Emesis (multiple) 679
Pruritus 651
Overdose 596
Most Referenced Drugs
Milbemycin Oxime + Spinosad 5,198
Spinosad 2,768
Afoxolaner 1,547
Ivermectin + Pyrantel As Pamoate Salt 1,317
Moxidectin 1,147
Fluralaner Chew Tablets 1,128
Pyrantel Pamoate;Sarolaner 1,090
Oclacitinib Maleate 892
Sarolaner 729
Fluralaner 13.64% 12-Week Chew 720
Selamectin 641
Imidacloprid + Moxidectin 568
Trilostane 539
Milbemycin Oxime + Praziquantel 533
Nitenpyram 471
Outcome Breakdown
Recovered/Normal
9,277 (40.9%)
Outcome Unknown
6,753 (29.8%)
Ongoing
4,992 (22.0%)
Recovered with Sequela
742 (3.3%)
Died
545 (2.4%)
Euthanized
359 (1.6%)
Gender Distribution
Female 12,047 (49.4%)
Male 11,678 (47.8%)
Unknown 605 (2.5%)
Mixed 78 (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 | 1,438 | |
| 2021 | 1,234 | |
| 2022 | 1,111 | |
| 2023 | 1,096 | |
| 2024 | 1,218 | |
| 2025 | 754 | |
Terrier - Yorkshire Pet Health Insights
Terrier - Yorkshire accounts for 24,408 FDA adverse event reports, ranking #8 by volume among dog breeds, with 904 reports (3.7%) coded as a death outcome. Mean age at report: 5.7 years, average weight 4.2 kg (9.3 lbs).
Top reported signs: Vomiting (6,294), Lethargy (see also Central nervous system depression in 'Neurological') (2,984), Emesis (2,851). Most-referenced drug: Milbemycin Oxime + Spinosad (5,198 reports), followed by Spinosad (2,768) and Afoxolaner (1,547).
Outcome coding on 22,668 status-recorded reports is dominated by Recovered/Normal (40.9%). Annual submissions ranged 2,010-2,025 across 16 years on file.
Dog Breeds With a Similar Report Volume
Frequently Asked Questions
How many FDA adverse event reports involve Terrier - Yorkshire? ▼
There are 24,408 adverse event reports involving Terrier - Yorkshire in the FDA database, with 904 reports involving death (3.7% death rate). Terrier - Yorkshire ranks #8 by report volume.
What are the most common adverse reactions reported for Terrier - Yorkshire? ▼
The most commonly reported adverse reactions for Terrier - Yorkshire are Vomiting (6,294 reports), Lethargy (see also Central nervous system depression in 'Neurological') (2,984 reports), Emesis (2,851 reports), Lack of efficacy (ectoparasite) - flea (2,358 reports), Diarrhoea (2,290 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 (5,198 reports), Spinosad (2,768 reports), Afoxolaner (1,547 reports), Ivermectin + Pyrantel As Pamoate Salt (1,317 reports), Moxidectin (1,147 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).
Does a high number of adverse event reports mean Terrier - Yorkshire is unhealthy? ▼
No. FDA adverse event reports are voluntarily submitted and do not prove causation. Popular breeds with more veterinary visits tend to have more reports. The data reflects reporting patterns, not actual incidence rates. Always consult a veterinarian for health decisions.
Where does this Terrier - Yorkshire safety data come from? ▼
All data comes from the FDA Center for Veterinary Medicine's adverse event reporting system. Pet owners, veterinarians, and manufacturers voluntarily submit reports about adverse events potentially linked to animal drugs and other products.
Compare a breed's report volume against how common the breed is before drawing conclusions. See our methodology for how death rate and rankings are computed.
Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. Breed figures are computed directly from FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.