Total Reports
3,013
FDA CVM filings
Dog /
FDA CVM · 2025 release 3,013 reports on file
Terrier - Rat - FDA Adverse Event Profile
Adverse-event records for Terrier - Rat (Dog) from the FDA Center for Veterinary Medicine.
Data updated June 2026
The record at a glance
Terrier - Rat ranks #61 by report volume among dog breeds - 131 of 3,013 reports (4.3%) recorded a death outcome.
- #61
- most-reported dog breed
- 4.3%
- death-coded report share
- 614
- Vomiting - top reaction
- 6.7 yr
- average age at report
Report counts track breed popularity and reporting activity, not real-world risk, read this alongside how common the breed is.
Deaths Reported
131
of 3,013 reports
Death Rate
4.3%
death-coded share
Avg Age at Report
6.7 yr
7.9 kg avg weight
Death-Coded Outcome Share
Terrier - Rat death-coded reports 4.3%
Cross-breed median
4.3% of 3,013 terrier - rat 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: 7.9 kg (17.4 lbs)
Top Reported Reactions
Vomiting 614
Lethargy (see also Central nervous system depression in 'Neurological') 290
INEFFECTIVE, HEARTWORM LARVAE 270
Emesis 263
Lack of efficacy (ectoparasite) - flea 249
Lack of efficacy - NOS 215
Lack of efficacy (endoparasite) - heartworm 208
Diarrhoea 155
Seizure NOS 131
Lack of efficacy (endoparasite) - hookworm 127
Anorexia 103
Cardiac disorder NOS 91
Ataxia 82
Pruritus 79
Shaking 76
Most Referenced Drugs
Milbemycin Oxime + Spinosad 686
Ivermectin + Pyrantel As Pamoate Salt 353
Spinosad 289
Moxidectin 206
Afoxolaner 194
Trilostane 115
Pyrantel Pamoate;Sarolaner 114
Oclacitinib Maleate 112
Milbemycin Oxime + Praziquantel 96
Imidacloprid + Moxidectin 63
Ivermectin, Pyrantel 59
Sarolaner 59
Carprofen 56
Melarsomine Dihydrochloride 51
Maropitant Citrate 49
Outcome Breakdown
Outcome Unknown
1,007 (36.4%)
Recovered/Normal
845 (30.6%)
Ongoing
585 (21.2%)
Recovered with Sequela
195 (7.1%)
Euthanized
66 (2.4%)
Died
65 (2.4%)
Gender Distribution
Female 1,619 (53.7%)
Male 1,337 (44.4%)
Unknown 49 (1.6%)
Mixed 8 (0.3%)
Reports by Year
| Year | Reports | Trend |
|---|---|---|
| 2010 | 136 | |
| 2011 | 184 | |
| 2012 | 228 | |
| 2013 | 279 | |
| 2014 | 239 | |
| 2015 | 229 | |
| 2016 | 226 | |
| 2017 | 261 | |
| 2018 | 201 | |
| 2019 | 218 | |
| 2020 | 174 | |
| 2021 | 121 | |
| 2022 | 118 | |
| 2023 | 151 | |
| 2024 | 148 | |
| 2025 | 100 | |
Terrier - Rat Pet Health Insights
Terrier - Rat accounts for 3,013 FDA adverse event reports, ranking #61 by volume among dog breeds, with 131 reports (4.3%) coded as a death outcome. Mean age at report: 6.7 years, average weight 7.9 kg (17.4 lbs).
Top reported signs: Vomiting (614), Lethargy (see also Central nervous system depression in 'Neurological') (290), INEFFECTIVE, HEARTWORM LARVAE (270). Most-referenced drug: Milbemycin Oxime + Spinosad (686 reports), followed by Ivermectin + Pyrantel As Pamoate Salt (353) and Spinosad (289).
Outcome coding on 2,763 status-recorded reports is dominated by Outcome Unknown (36.4%). 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 - Rat? ▼
There are 3,013 adverse event reports involving Terrier - Rat in the FDA database, with 131 reports involving death (4.3% death rate). Terrier - Rat ranks #61 by report volume.
What are the most common adverse reactions reported for Terrier - Rat? ▼
The most commonly reported adverse reactions for Terrier - Rat are Vomiting (614 reports), Lethargy (see also Central nervous system depression in 'Neurological') (290 reports), INEFFECTIVE, HEARTWORM LARVAE (270 reports), Emesis (263 reports), Lack of efficacy (ectoparasite) - flea (249 reports).
What drugs are most frequently associated with Terrier - Rat adverse events? ▼
The drugs most frequently referenced in Terrier - Rat adverse event reports are Milbemycin Oxime + Spinosad (686 reports), Ivermectin + Pyrantel As Pamoate Salt (353 reports), Spinosad (289 reports), Moxidectin (206 reports), Afoxolaner (194 reports).
What is the average age of Terrier - Rat in adverse event reports? ▼
The average age of Terrier - Rat at the time of adverse event reports is 6.7 years, with an average weight of 7.9 kg (17.4 lbs).
Does a high number of adverse event reports mean Terrier - Rat 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 - Rat 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.