Edition of October 2026: counts of adverse event reports
The first edition of the site
Made from the update of 28 Oct 2026. The data have the reports that FDA received through 26 Jun 2026.
Read this first. FDA says this about the data:
An API dataset query result cannot be used to estimate the risk associated with the product or compare one drug or device product with another. When looking at the results, be aware that there is no certainty that the reported drug or device caused the adverse event. This dataset should not be the sole source of information for clinical decision-making or other assumptions about the safety or effectiveness of a product. The adverse event may have been related to an underlying disease, other drugs used at the same time or other non-drug related sources.
FDA Center for Veterinary Medicine publishes these words. Source: Adverse Event Reports for Animal Drugs and Devices, read on . The data have the reports that FDA received through .
Headline counts
| Figure | This edition |
|---|---|
| Reports in the data, all years | 1,378,761 |
| Reports, latest 12 months | 74,895 |
| Reports, the 12 months before | 78,523 |
| Reports received in January to March 2026 | 17,307 |
| Share of reports about dogs | 72.6% |
| Share of reports about cats | 11% |
| Share of reports about a lack of expected effectiveness | 23.3% |
| Drug pages with 50 reports or more | 367 |
Search engines list 406 pages of drugs, ingredients, signs, breeds and species in this edition. A report is not proof that a drug caused a sign. FDA says that a report can take 3 to 6 months to reach the public data. The newest months can get more reports in a later update.
Updates in this month
- 11 Oct 2026: FDA changed the counts for January to March 2026 in a later export. The count for all animal drugs in January to March 2026 changed from 14,826 to 17,307. 101 drug pages have a different count. 1 drug page is new.
Reports that FDA received each year, 2014 to 2025
FDA received 77,103 adverse event reports for animal drugs in 2025, the last full year in the data.
| Row | Name | Figure |
|---|---|---|
| 1 | 2026, January to June | 35,980 |
| 2 | 2025 | 77,103 |
| 3 | 2024 | 81,214 |
| 4 | 2023 | 65,371 |
| 5 | 2022 | 58,692 |
| 6 | 2021 | 63,159 |
| 7 | 2020 | 68,367 |
| 8 | 2019 | 72,492 |
| 9 | 2018 | 71,103 |
| 10 | 2017 | 77,081 |
The row is the place in the order of the table. A count is not a measure of risk. The full table of this finding, with the figures of the newest update.
Reports by species, 1987 to June 2026
Reports about dogs were 72.6% of the 1,378,761 reports that FDA received from January 1987 to June 2026.
| Row | Name | Figure |
|---|---|---|
| 1 | Dog | 1,001,350 |
| 2 | Cat | 151,153 |
| 3 | Cattle | 31,355 |
| 4 | Horse | 18,674 |
| 5 | Pig | 2,627 |
| 6 | Chicken | 1,083 |
| 7 | Sheep | 1,072 |
| 8 | Goat | 841 |
| 9 | Turkey | 524 |
| 10 | Rabbit | 515 |
The row is the place in the order of the table. A count is not a measure of risk. The full table of this finding, with the figures of the newest update.
Clinical signs in the most reports, 12 months to June 2026
The sign "Vomiting" is in the largest number of the reports that FDA received in the 12 months to June 2026: 7,871 of 74,895 reports (10.5%).
| Row | Name | Figure |
|---|---|---|
| 1 | Vomiting | 7,871 |
| 2 | Lack of efficacy (ectoparasite) - flea | 6,828 |
| 3 | Lethargy | 5,732 |
| 4 | Lack of efficacy (endoparasite) - heartworm | 5,433 |
| 5 | Diarrhoea | 4,531 |
| 6 | Lack of efficacy - NOS | 4,330 |
| 7 | Lack of efficacy (endoparasite) - hookworm | 4,195 |
| 8 | Medication error NOS | 3,250 |
| 9 | Lack of efficacy (bacteria) - Borrelia | 2,791 |
| 10 | Seizure NOS | 2,784 |
The row is the place in the order of the table. A count is not a measure of risk. The full table of this finding, with the figures of the newest update.
Kinds of report by species, 1987 to June 2026
Of the 1,378,761 reports, 64.5% are about a safety issue only.
| Row | Name | Figure |
|---|---|---|
| 1 | Dog | 1,001,350 |
| 2 | Cat | 151,153 |
| 3 | Cattle | 31,355 |
| 4 | Horse | 18,674 |
| 5 | Pig | 2,627 |
| 6 | Chicken | 1,083 |
| 7 | Sheep | 1,072 |
The row is the place in the order of the table. A count is not a measure of risk. The full table of this finding, with the figures of the newest update.
How an edition is made
A program writes each edition from the figures that the site shows in that month, with fixed sentence rules. A month keeps the figures of its last update. A change is between this edition and the edition before. The edition has no table of drugs, because the site does not rank drugs.