Total Reports
7
Low report volume
Rabbit /
Breed profile · FDA CVM July 2026 extract
Rex adverse-event record
Adverse-event filings for Rex (Rabbit) in the FDA Center for Veterinary Medicine openFDA extract. Browse rabbit breeds, reactions, and outcomes below.
- #473 of 510
- by report volume (all breeds)
- 7
- FDA CVM reports on file
- 42.9%
- death-coded share of reports
- 5
- Cardiac arrest - top reaction
How the 7 reports break down
By recorded gender -- every report on file for Rex, no filtering.
Annual report volume
Data updated September 2026
The verdict
According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Rex ranks #460 of 510 by total reports (7). Death-coded-share rank requires at least 50 reports. 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)
- #460
- This breed, reports of 510
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. Rex has 7 reports now versus 7 in that prior snapshot: 0 the same number of (0.0%).
- Report change
- +0
- 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 Rex changesDeaths Reported
3
of 7 reports
Death-coded share of reports
42.9%
42.9% death-coded
Avg Age at Report
2.9 yr
2.5 kg avg weight
Death-Coded Outcome Share
Rex death-coded reports 42.9%
Cross-breed median
42.9% of 7 rex 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.
Average weight at time of report: 2.5 kg (5.5 lbs)
Top Reported Reactions
Cardiac arrest 5
Respiratory arrest 3
Death 3
Apnoea 2
Behavioural disorder NOS 1
Most Referenced Drugs
Midazolam 5
Alfaxalone 4
Isoflurane 4
Buprenorphine 4
Dexmedetomidine 3
Outcome Breakdown
Recovered/Normal
4 (57.1%)
Died
3 (42.9%)
Gender Distribution
Female 4 (57.1%)
Male 3 (42.9%)
Reports by Year
| Year | Reports | Trend |
|---|---|---|
| 2014 | 1 | |
| 2019 | 2 | |
| 2021 | 3 | |
| 2022 | 1 | |
Rex: high death-coded share in the FDA CVM extract
Signature read: 7 reports place Rex in the lower third of breed filing volume (#473 of 510). According to FDA CVM filings indexed on PlainBreed as of July 2026 extract, Rex sits at #473 of 510 by report volume among all breeds and #6 of 7 among rabbit breeds, with 7 reports and 3 (42.9%) death-coded. Mean age at report: 2.9 years, average weight 2.5 kg (5.5 lbs).
Top reported signs: Cardiac arrest (5), Respiratory arrest (3), Death (3). Most-referenced drug: Midazolam (5 reports), followed by Alfaxalone (4) and Isoflurane (4).
Outcome coding on 7 status-recorded reports is dominated by Recovered/Normal (57.1%). Annual submissions ranged 1-2,022 across 4 years on file.
Rabbit Breeds With a Similar Report Volume
Nationwide breeds with similar profiles
Sparse-volume peer sets for Rex drawn from openFDA outside the Rabbit family so the neighborhoods are not species containment (the similar-volume list above stays within species).
Similar average weight
Nearest other-species breeds by reported average weight (2.5 kg here).
What to do with this rabbit
- Compare Rex's report volume and death-coded share against similar-volume breeds nationwide. See similar breeds
- Read how death-coded share differs from a mortality rate before drawing conclusions. Breed-specific risks guide
- Browse every rabbit breed we track for comparison. All rabbit breeds
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 Rex? ▼
There are 7 adverse event reports involving Rex in the FDA database, of which 3 were death-coded (42.9% 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, Rex ranks #473 of 510 by report volume among all breeds PlainBreed indexes (#6 of 7 among rabbit breeds).
Where does Rex sit among other breeds in PlainBreed's corpus? ▼
According to FDA CVM report volume, Rex is #473 of 510 breeds indexed on PlainBreed (same ordering as the most-reported-breeds ranking). Inside Rabbit, it is #6 of 7. It has fewer than 50 reports, so it is outside the death-rate ranking cohort (≥50 reports). These are placement ranks in the reporting corpus, not clinical risk scores.
What are the most common adverse reactions reported for Rex? ▼
The most commonly reported adverse reactions for Rex are Cardiac arrest (5 reports), Respiratory arrest (3 reports), Death (3 reports), Apnoea (2 reports), Behavioural disorder NOS (1 reports).
What drugs are most frequently associated with Rex adverse events? ▼
The drugs most frequently referenced in Rex adverse event reports are Midazolam (5 reports), Alfaxalone (4 reports), Isoflurane (4 reports), Buprenorphine (4 reports), Dexmedetomidine (3 reports).
What is the average age of Rex in adverse event reports? ▼
The average age of Rex at the time of adverse event reports is 2.9 years, with an average weight of 2.5 kg (5.5 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 Rex (Rabbit), extract as of July 2026 extract. 7 reports · 3 death-coded (42.9% of reports, not a mortality rate) · #473 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 →