Total Reports
1,837
FDA CVM filings
Dog /
FDA CVM · 2025 release 1,837 reports on file
Brittany - FDA Adverse Event Profile
Adverse-event records for Brittany (Dog) from the FDA Center for Veterinary Medicine.
Data updated June 2026
The record at a glance
Brittany's FDA record: #82 most-reported dog breed, 1,837 total reports, 2.7% death-coded (49 reports).
- #82
- most-reported dog breed
- 2.7%
- death-coded report share
- 275
- Vomiting - top reaction
- 6.0 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
49
of 1,837 reports
Death Rate
2.7%
death-coded share
Avg Age at Report
6.0 yr
18.9 kg avg weight
Death-Coded Outcome Share
Brittany death-coded reports 2.7%
Cross-breed median
2.7% of 1,837 brittany 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: 18.9 kg (41.7 lbs)
Top Reported Reactions
Vomiting 275
Lack of efficacy (endoparasite) - hookworm 184
Lack of efficacy (endoparasite) - heartworm 153
INEFFECTIVE, HEARTWORM LARVAE 134
Emesis 117
Digestive tract disorder NOS 114
Lethargy (see also Central nervous system depression in 'Neurological') 108
Lack of efficacy - NOS 98
INEFFECTIVE, ASCARIDS NOS 80
Diarrhoea 75
Lack of efficacy (ectoparasite) - tick NOS 57
Seizure NOS 56
Lack of efficacy (endoparasite) - roundworm NOS 51
Lack of efficacy (ectoparasite) - flea 50
INEFFECTIVE, HOOKS 50
Most Referenced Drugs
Milbemycin Oxime + Spinosad 316
Ivermectin + Pyrantel As Pamoate Salt 204
Milbemycin Oxime + Praziquantel 145
Pyrantel Pamoate;Sarolaner 129
Moxidectin 115
Fluralaner Chew Tablets 74
Spinosad 73
Carprofen 66
Fluralaner 13.64% 12-Week Chew 66
Ivermectin, Pyrantel 64
Trilostane 61
Lotilaner 57
Afoxolaner 54
Sarolaner 44
Oclacitinib Maleate 42
Outcome Breakdown
Outcome Unknown
577 (35.4%)
Ongoing
498 (30.6%)
Recovered/Normal
421 (25.9%)
Recovered with Sequela
83 (5.1%)
Died
27 (1.7%)
Euthanized
22 (1.4%)
Gender Distribution
Female 922 (50.2%)
Male 886 (48.2%)
Unknown 23 (1.3%)
Mixed 6 (0.3%)
Reports by Year
| Year | Reports | Trend |
|---|---|---|
| 2010 | 105 | |
| 2011 | 115 | |
| 2012 | 122 | |
| 2013 | 129 | |
| 2014 | 106 | |
| 2015 | 97 | |
| 2016 | 105 | |
| 2017 | 117 | |
| 2018 | 112 | |
| 2019 | 144 | |
| 2020 | 97 | |
| 2021 | 98 | |
| 2022 | 127 | |
| 2023 | 123 | |
| 2024 | 146 | |
| 2025 | 94 | |
Brittany Pet Health Insights
Brittany accounts for 1,837 FDA adverse event reports, ranking #82 by volume among dog breeds, with 49 reports (2.7%) coded as a death outcome. Mean age at report: 6.0 years, average weight 18.9 kg (41.7 lbs).
Top reported signs: Vomiting (275), Lack of efficacy (endoparasite) - hookworm (184), Lack of efficacy (endoparasite) - heartworm (153). Most-referenced drug: Milbemycin Oxime + Spinosad (316 reports), followed by Ivermectin + Pyrantel As Pamoate Salt (204) and Milbemycin Oxime + Praziquantel (145).
Outcome coding on 1,628 status-recorded reports is dominated by Outcome Unknown (35.4%). Annual submissions ranged 2,010-2,025 across 16 years on file.
Dog Breeds With a Similar Report Volume
Terrier - Cairn
1,928 reports · 4.7% death rate
Chow Chow
2,029 reports · 6.4% death rate
Shepherd Dog - Belgian Malinois
1,623 reports · 3.0% death rate
Shiba Inu
1,622 reports · 2.5% death rate
Terrier - Irish Soft-coated Wheaten
1,617 reports · 3.2% death rate
Papillon - Spaniel - Continental Toy (with erect ears or with dropped ears (Phaléne))
2,087 reports · 4.4% death rate
Frequently Asked Questions
How many FDA adverse event reports involve Brittany? ▼
There are 1,837 adverse event reports involving Brittany in the FDA database, with 49 reports involving death (2.7% death rate). Brittany ranks #82 by report volume.
What are the most common adverse reactions reported for Brittany? ▼
The most commonly reported adverse reactions for Brittany are Vomiting (275 reports), Lack of efficacy (endoparasite) - hookworm (184 reports), Lack of efficacy (endoparasite) - heartworm (153 reports), INEFFECTIVE, HEARTWORM LARVAE (134 reports), Emesis (117 reports).
What drugs are most frequently associated with Brittany adverse events? ▼
The drugs most frequently referenced in Brittany adverse event reports are Milbemycin Oxime + Spinosad (316 reports), Ivermectin + Pyrantel As Pamoate Salt (204 reports), Milbemycin Oxime + Praziquantel (145 reports), Pyrantel Pamoate;Sarolaner (129 reports), Moxidectin (115 reports).
What is the average age of Brittany in adverse event reports? ▼
The average age of Brittany at the time of adverse event reports is 6.0 years, with an average weight of 18.9 kg (41.7 lbs).
Does a high number of adverse event reports mean Brittany 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 Brittany 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.