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Breed profile · FDA CVM July 2026 extract

Terrier - Bull adverse-event record

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

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#111 of 510
by report volume (all breeds)
1,033
FDA CVM reports on file
4.5%
death-coded share of reports
#152 of 275
by death-coded share (≥50 reports)

How the 1,033 reports break down

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

Annual report volume

Annual adverse-event report trend Yearly FDA CVM adverse-event report counts for this breed. 107 80.25 53.5 26.75 0 2019 2020 2021 2022 2023 2024 2025 2026 Reports filed Death-coded reports
Annual report volume for Terrier - Bull drawn from FDA CVM filings.

Data updated September 2026

The verdict

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Terrier - Bull ranks #111 of 510 by total reports (1,033) and #152 of 275 by death-coded share (4.5%). 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)
#111
This breed, reports of 510
#152
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 - Bull has 1,033 reports now versus 1,014 in that prior snapshot: 19 more (1.9%).

Report change
+19
Death-coded reports
+4
Death-coded share
+0.3 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 - Bull changes

Total Reports

1,033

High report volume

Deaths Reported

47

of 1,033 reports

Death-coded share of reports

4.5%

Below-median death-coded share

Avg Age at Report

5.1 yr

24.0 kg avg weight

Breed Safety Scorecard

F (38/100)

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-
4.5%

Share of reports coded as a fatality

Euthanasia rate D
2.2%

Share of reports resulting in euthanasia

Full recovery rate F
24.4%

Share of reports coded "Recovered/Normal"

5-year trend F
+63%

Change in annual report volume over the last 5 complete years

Death-Coded Outcome Share

Terrier - Bull death-coded reports 4.5%
Cross-breed median

4.5% of 1,033 terrier - bull 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 - Bull's death-coded share sits among indexed breeds

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

5% 45th percentile Higher share than 45% 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 - Bull 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: 24.0 kg (52.9 lbs)

Top Reported Reactions

Vomiting 187
Lack of efficacy (endoparasite) - heartworm 95
Diarrhoea 92
Lethargy (see also Central nervous system depression in 'Neurological') 79
Lack of efficacy - NOS 64
INEFFECTIVE, HEARTWORM LARVAE 59
Emesis 55
Lack of efficacy (ectoparasite) - flea 48
Anorexia 44
Lack of efficacy (endoparasite) - hookworm 42
Lethargy (see also Central nervous system depression in Neurological) 37
Behavioural disorder NOS 36
Ataxia 35
Other abnormal test result NOS 34
Panting 33

Most Referenced Drugs

Milbemycin Oxime + Spinosad 143
Oclacitinib Maleate 116
Ivermectin + Pyrantel As Pamoate Salt 104
Bedinvetmab 71
Moxidectin 60
Afoxolaner 52
Pyrantel Pamoate;Sarolaner 52
Spinosad 48
Gabapentin 44
Milbemycin Oxime + Praziquantel 38
Carprofen 34
Fluralaner Chew Tablets 30
Anti-Il31 Mab Mcs Lot #1283563 27
Prednisone 23
Grapiprant 22

Outcome Breakdown

Ongoing
318 (33.4%)
Outcome Unknown
287 (30.2%)
Recovered/Normal
252 (26.5%)
Recovered with Sequela
47 (4.9%)
Died
24 (2.5%)
Euthanized
23 (2.4%)

Gender Distribution

Female 517 (50.0%)
Male 500 (48.4%)
Unknown 14 (1.4%)
Mixed 2 (0.2%)

Reports by Year

Year Reports Trend
2010 38
2011 58
2012 53
2013 57
2014 75
2015 73
2016 71
2017 81
2018 61
2019 58
2020 46
2021 48
2022 50
2023 73
2024 107
2025 78
2026 6

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

Signature read: 1,033 reports place Terrier - Bull in the upper third of breed filing volume (#111 of 510). According to FDA CVM filings indexed on PlainBreed as of July 2026 extract, Terrier - Bull sits at #111 of 510 by report volume among all breeds and #93 of 298 among dog breeds, with 1,033 reports and 47 (4.5%) death-coded. On death-coded share among breeds with ≥50 reports, it ranks #152 of 275. Mean age at report: 5.1 years, average weight 24.0 kg (52.9 lbs).

Top reported signs: Vomiting (187), Lack of efficacy (endoparasite) - heartworm (95), Diarrhoea (92). Most-referenced drug: Milbemycin Oxime + Spinosad (143 reports), followed by Oclacitinib Maleate (116) and Ivermectin + Pyrantel As Pamoate Salt (104).

Outcome coding on 951 status-recorded reports is dominated by Ongoing (33.4%). Annual submissions ranged 6-2,026 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.

Bloodhound
1,043 reports · 3.5% death-coded
Retriever - Chesapeake Bay
1,073 reports · 3.0% death-coded
Spaniel - Springer (unspecified)
983 reports · 5.2% death-coded
Akita
1,118 reports · 5.2% death-coded
Dachshund - Standard Long-haired
1,136 reports · 6.1% death-coded
Bulldog - English
1,142 reports · 9.1% death-coded

Nationwide breeds with similar profiles

High-volume peer sets for Terrier - Bull 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 (4.5% death-coded here).

Bengal 4.6% · Cat Scottish Fold Longhair 4.8% · Cat Siberian 4.2% · Cat Egyptian Mau 5.3% · Cat

Similar average weight

Nearest other-species breeds by reported average weight (24.0 kg here).

Mixed (Sheep) 24.9 kg · Sheep Crossbred Caprine/goat 21.7 kg · Goat Pygmy 20.3 kg · Goat Fish (other) 32.4 kg · Fish

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 - Bull? ▼
There are 1,033 adverse event reports involving Terrier - Bull in the FDA database, of which 47 were death-coded (4.5% 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 - Bull ranks #111 of 510 by report volume among all breeds PlainBreed indexes (#93 of 298 among dog breeds).
Where does Terrier - Bull sit among other breeds in PlainBreed's corpus? ▼
According to FDA CVM report volume, Terrier - Bull is #111 of 510 breeds indexed on PlainBreed (same ordering as the most-reported-breeds ranking). Inside Dog, it is #93 of 298. Among breeds with at least 50 reports, its death-coded share ranks #152 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 - Bull? ▼
The most commonly reported adverse reactions for Terrier - Bull are Vomiting (187 reports), Lack of efficacy (endoparasite) - heartworm (95 reports), Diarrhoea (92 reports), Lethargy (see also Central nervous system depression in 'Neurological') (79 reports), Lack of efficacy - NOS (64 reports).
What drugs are most frequently associated with Terrier - Bull adverse events? ▼
The drugs most frequently referenced in Terrier - Bull adverse event reports are Milbemycin Oxime + Spinosad (143 reports), Oclacitinib Maleate (116 reports), Ivermectin + Pyrantel As Pamoate Salt (104 reports), Bedinvetmab (71 reports), Moxidectin (60 reports).
What is the average age of Terrier - Bull in adverse event reports? ▼
The average age of Terrier - Bull at the time of adverse event reports is 5.1 years, with an average weight of 24.0 kg (52.9 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 - Bull (Dog), extract as of July 2026 extract. 1,033 reports · 47 death-coded (4.5% of reports, not a mortality rate) · #111 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 →