Total Reports
232
FDA CVM filings
Dog /
FDA CVM · 2025 release 232 reports on file
Terrier - Norwich - FDA Adverse Event Profile
Adverse-event records for Terrier - Norwich (Dog) from the FDA Center for Veterinary Medicine.
Data updated June 2026
The record at a glance
Among dog breeds, Terrier - Norwich is #176 by FDA report volume; 3.0% of its 232 reports (7) were death-coded.
- #176
- most-reported dog breed
- 3.0%
- death-coded report share
- 43
- Vomiting - top reaction
- 6.1 yr
- average age at report
Higher volume usually means a more popular breed, not a riskier one, compare against how common the breed is.
Deaths Reported
7
of 232 reports
Death Rate
3.0%
death-coded share
Avg Age at Report
6.1 yr
7.1 kg avg weight
Death-Coded Outcome Share
Terrier - Norwich death-coded reports 3.0%
Cross-breed median
3.0% of 232 terrier - norwich 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: 7.1 kg (15.7 lbs)
Top Reported Reactions
Vomiting 43
Lethargy (see also Central nervous system depression in 'Neurological') 37
Diarrhoea 28
Shaking 12
Emesis 12
Behavioural disorder NOS 12
Seizure NOS 11
INEFFECTIVE, ASCARIDS NOS 10
Most Referenced Drugs
Milbemycin Oxime + Spinosad 75
Ivermectin + Pyrantel As Pamoate Salt 21
Pyrantel Pamoate;Sarolaner 18
Trilostane 16
Spinosad 15
Afoxolaner 11
Fluralaner Chew Tablets 7
Oclacitinib Maleate 7
Outcome Breakdown
Recovered/Normal
89 (41.4%)
Outcome Unknown
64 (29.8%)
Ongoing
45 (20.9%)
Recovered with Sequela
10 (4.7%)
Euthanized
5 (2.3%)
Died
2 (0.9%)
Gender Distribution
Female 114 (49.1%)
Male 111 (47.8%)
Unknown 6 (2.6%)
Mixed 1 (0.4%)
Reports by Year
| Year | Reports | Trend |
|---|---|---|
| 2010 | 8 | |
| 2011 | 12 | |
| 2012 | 28 | |
| 2013 | 18 | |
| 2014 | 16 | |
| 2015 | 23 | |
| 2016 | 22 | |
| 2017 | 13 | |
| 2018 | 23 | |
| 2019 | 6 | |
| 2020 | 14 | |
| 2021 | 13 | |
| 2022 | 6 | |
| 2023 | 12 | |
| 2024 | 13 | |
| 2025 | 5 | |
Terrier - Norwich Pet Health Insights
Terrier - Norwich accounts for 232 FDA adverse event reports, ranking #176 by volume among dog breeds, with 7 reports (3.0%) coded as a death outcome. Mean age at report: 6.1 years, average weight 7.1 kg (15.7 lbs).
Top reported signs: Vomiting (43), Lethargy (see also Central nervous system depression in 'Neurological') (37), Diarrhoea (28). Most-referenced drug: Milbemycin Oxime + Spinosad (75 reports), followed by Ivermectin + Pyrantel As Pamoate Salt (21) and Pyrantel Pamoate;Sarolaner (18).
Outcome coding on 215 status-recorded reports is dominated by Recovered/Normal (41.4%). Annual submissions ranged 2,010-2,025 across 16 years on file.
Dog Breeds With a Similar Report Volume
Setter - Gordon
227 reports · 5.3% death rate
Retriever - Nova Scotia Duck Tolling
240 reports · 1.7% death rate
Spaniel - Tibetan
219 reports · 5.0% death rate
Griffon - French Wire-haired Pointing
218 reports · 0.5% death rate
Treeing Feist
215 reports · 1.9% death rate
Coonhound - Redbone
210 reports · 3.8% death rate
Frequently Asked Questions
How many FDA adverse event reports involve Terrier - Norwich? ▼
There are 232 adverse event reports involving Terrier - Norwich in the FDA database, with 7 reports involving death (3.0% death rate). Terrier - Norwich ranks #176 by report volume.
What are the most common adverse reactions reported for Terrier - Norwich? ▼
The most commonly reported adverse reactions for Terrier - Norwich are Vomiting (43 reports), Lethargy (see also Central nervous system depression in 'Neurological') (37 reports), Diarrhoea (28 reports), Shaking (12 reports), Emesis (12 reports).
What drugs are most frequently associated with Terrier - Norwich adverse events? ▼
The drugs most frequently referenced in Terrier - Norwich adverse event reports are Milbemycin Oxime + Spinosad (75 reports), Ivermectin + Pyrantel As Pamoate Salt (21 reports), Pyrantel Pamoate;Sarolaner (18 reports), Trilostane (16 reports), Spinosad (15 reports).
What is the average age of Terrier - Norwich in adverse event reports? ▼
The average age of Terrier - Norwich at the time of adverse event reports is 6.1 years, with an average weight of 7.1 kg (15.7 lbs).
Does a high number of adverse event reports mean Terrier - Norwich 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 - Norwich 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.