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Breed profile · FDA CVM July 2026 extract

Terrier - Rat adverse-event record

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

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#61 of 510
by report volume (all breeds)
3,078
FDA CVM reports on file
4.3%
death-coded share of reports
#163 of 275
by death-coded share (≥50 reports)

How the 3,078 reports break down

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

Annual report volume

Annual adverse-event report trend Yearly FDA CVM adverse-event report counts for this breed. 218 163.5 109 54.5 0 2019 2020 2021 2022 2023 2024 2025 2026 Reports filed Death-coded reports
Annual report volume for Terrier - Rat drawn from FDA CVM filings.

Data updated September 2026

The verdict

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Terrier - Rat ranks #61 of 510 by total reports (3,078) and #163 of 275 by death-coded share (4.3%). 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)
#61
This breed, reports of 510
#163
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 - Rat has 3,078 reports now versus 3,053 in that prior snapshot: 25 more (0.8%).

Report change
+25
Death-coded reports
+0
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 - Rat changes

Total Reports

3,078

High report volume

Deaths Reported

133

of 3,078 reports

Death-coded share of reports

4.3%

Below-median death-coded share

Avg Age at Report

6.8 yr

7.9 kg avg weight

Breed Safety Scorecard

C- (50/100)

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 C
4.3%

Share of reports coded as a fatality

Euthanasia rate D
2.1%

Share of reports resulting in euthanasia

Full recovery rate D
27.9%

Share of reports coded "Recovered/Normal"

5-year trend D
+16%

Change in annual report volume over the last 5 complete years

Death-Coded Outcome Share

Terrier - Rat death-coded reports 4.3%
Cross-breed median

4.3% of 3,078 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 (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 - Rat's death-coded share sits among indexed breeds

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

4% 41st percentile Higher share than 41% 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 - Rat 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.

Average weight at time of report: 7.9 kg (17.4 lbs)

Top Reported Reactions

Vomiting 625
Lethargy (see also Central nervous system depression in 'Neurological') 290
INEFFECTIVE, HEARTWORM LARVAE 270
Emesis 263
Lack of efficacy (ectoparasite) - flea 252
Lack of efficacy - NOS 220
Lack of efficacy (endoparasite) - heartworm 216
Diarrhoea 162
Lack of efficacy (endoparasite) - hookworm 135
Seizure NOS 133
Anorexia 103
Cardiac disorder NOS 91
Ataxia 83
Shaking 82
Behavioural disorder NOS 80

Most Referenced Drugs

Milbemycin Oxime + Spinosad 689
Ivermectin + Pyrantel As Pamoate Salt 357
Spinosad 289
Moxidectin 213
Afoxolaner 195
Pyrantel Pamoate;Sarolaner 122
Trilostane 119
Oclacitinib Maleate 118
Milbemycin Oxime + Praziquantel 99
Imidacloprid + Moxidectin 64
Ivermectin, Pyrantel 59
Sarolaner 59
Carprofen 56
Maropitant Citrate 54
Melarsomine Dihydrochloride 51

Outcome Breakdown

Outcome Unknown
1,026 (36.3%)
Recovered/Normal
859 (30.4%)
Ongoing
614 (21.7%)
Recovered with Sequela
195 (6.9%)
Died
67 (2.4%)
Euthanized
66 (2.3%)

Gender Distribution

Female 1,650 (53.6%)
Male 1,371 (44.5%)
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 122
2022 118
2023 151
2024 151
2025 142
2026 19

Terrier - Rat: high-volume FDA adverse-event cohort

Signature read: 3,078 reports place Terrier - Rat in the upper third of breed filing volume (#61 of 510). According to FDA CVM filings indexed on PlainBreed as of July 2026 extract, Terrier - Rat sits at #61 of 510 by report volume among all breeds and #54 of 298 among dog breeds, with 3,078 reports and 133 (4.3%) death-coded. On death-coded share among breeds with ≥50 reports, it ranks #163 of 275. Mean age at report: 6.8 years, average weight 7.9 kg (17.4 lbs).

Top reported signs: Vomiting (625), Lethargy (see also Central nervous system depression in 'Neurological') (290), INEFFECTIVE, HEARTWORM LARVAE (270). Most-referenced drug: Milbemycin Oxime + Spinosad (689 reports), followed by Ivermectin + Pyrantel As Pamoate Salt (357) and Spinosad (289).

Outcome coding on 2,827 status-recorded reports is dominated by Outcome Unknown (36.3%). Annual submissions ranged 19-2,026 across 17 years on file.

Dog Breeds With a Similar Report Volume

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

Collie (unspecified)
3,131 reports · 4.8% death-coded
Mountain Dog - Bernese
3,012 reports · 4.2% death-coded
Lhasa Apso
3,196 reports · 3.7% death-coded
Mastiff
2,950 reports · 6.2% death-coded
Spaniel (unspecified)
3,209 reports · 4.8% death-coded
Corgi (unspecified)
2,865 reports · 4.2% death-coded

Nationwide breeds with similar profiles

High-volume peer sets for Terrier - Rat 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 (4.3% death-coded here).

Siberian 4.2% · Cat Bengal 4.6% · Cat Scottish Fold Longhair 4.8% · Cat British cat 3.8% · Cat

Similar average weight

Nearest other-species breeds by reported average weight (7.9 kg here).

Nigerian Dwarf 7.5 kg · Goat Maine Coon 6.1 kg · Cat Norwegian Forest 5.8 kg · Cat Primate (other) 10.1 kg · Primate

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 - Rat? ▼
There are 3,078 adverse event reports involving Terrier - Rat in the FDA database, of which 133 were death-coded (4.3% 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 - Rat ranks #61 of 510 by report volume among all breeds PlainBreed indexes (#54 of 298 among dog breeds).
Where does Terrier - Rat sit among other breeds in PlainBreed's corpus? ▼
According to FDA CVM report volume, Terrier - Rat is #61 of 510 breeds indexed on PlainBreed (same ordering as the most-reported-breeds ranking). Inside Dog, it is #54 of 298. Among breeds with at least 50 reports, its death-coded share ranks #163 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 - Rat? ▼
The most commonly reported adverse reactions for Terrier - Rat are Vomiting (625 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 (252 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 (689 reports), Ivermectin + Pyrantel As Pamoate Salt (357 reports), Spinosad (289 reports), Moxidectin (213 reports), Afoxolaner (195 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 6.8 years, with an average weight of 7.9 kg (17.4 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 - Rat (Dog), extract as of July 2026 extract. 3,078 reports · 133 death-coded (4.3% of reports, not a mortality rate) · #61 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 →