Reaction profile

The FDA adverse-event record for abnormal birth weight

Name: Abnormal birth weight - FDA Animal Adverse Reaction
Creator: PlainBreed
License: https://open.fda.gov/license/

36 FDA reports name abnormal birth weight, a lower-volume reaction in the CVM extract (VeDDRA 1911). Plate stamps and neighbourhood peers follow.

#1905 of 2,481
by report volume (all reactions): 36
reports citing this reaction: 41.7%
death-coded share: Dog
most-affected species

Compiled by PlainBreed

Verify with FDA CVM →

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. Abnormal birth weight has 36 reports now versus 35 in that prior snapshot: 1 more (2.9%).

Report change: +1
Death-coded reports: +0
Death-coded share: −1.2 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 Abnormal birth weight changes

FDA AER · VeDDRA plate

Code 1911 VOL-TRACE

VOL-TRACE · DEATH-HOT · LOWER-Q · PHOTO-FINISH · SPECIES-DOG · DRUG-LEAD · DESK-WIDE · BOOK-FULL

VOL-TRACE 36 reports
DEATH-HOT 41.7%
LOWER-Q #1905/2481
PHOTO-FINISH Adaptor, leaking
SPECIES-DOG Dog · 24
DRUG-LEAD Spinosad · 8
DESK-WIDE 20 breeds
BOOK-FULL 8/8 fields

Nearest volume peer: Adaptor, leaking (±0 reports)

Upper-third death-coded share drives the outcome stamps on this plate; volume band, corpus rank, and co-report peers follow. Not a clinical diagnosis.

Lower-volume neighbourhood around Abnormal birth weight

Lower-third volume poles plus nearest peers, not a full reaction corpus board reprint.

FDA AER report volume · neighbourhood around Abnormal birth weight

Abnormal birth weight: high death-coded share in the FDA AER plate

Signature read: Abnormal birth weight's 41.7% death-coded share is among the highest in the openFDA reaction corpus. Report volume is lower-third scale: 36 named reports in the openFDA extract. Death-coded share is upper-third: 15 of 36 reports (41.7% of named reports). Nearest volume peer: Adaptor, leaking (±0 reports). Lead species Dog (24). Lead co-reported drug Spinosad (8).

Read these counts as reporting volume, not risk: per our methodology, A high death-coded share in FDA filings does not prove causation; co-reporting is voluntary temporal association only. Browse the full reactions index or the about page for how PlainBreed frames FDA CVM extracts.

Species Most Affected

Dog 24

Cattle 6

Cat 3

Horse 2

Rabbit 1

Breeds Most Affected

Domestic Shorthair 3

Cattle (unknown) 2

Boxer (German Boxer) 2

Dog (unknown) 2

Collie - Border 2

Holstein-Friesian also known as Holstein 2

Retriever - Labrador 2

Crossbred Canine/dog 1

Cattle Dog - Australian (blue heeler, red heeler, Queensland cattledog) 1

Cattle (other) 1

Associated Drugs

Spinosad 8

Monensin Sodium 4

Milbemycin Oxime + Spinosad 4

Fenbendazol Granules 2

Fluralaner Chew Tablets 2

Nitenpyram 2

Milbemycin Oxime 2

Fenbendazol Suspension 2

Melarsomine Dihydrochloride 1

Albendazole 1

Imidacloprid, Moxidectin 1

Monensin 1

Diclofenac 1

Emodepside + Praziquantel 1

Thiabendazole/Neomycin/Dexamethason 1

Heartworm Prevention (Unknown) 1

Spinosad, Milbemycin 1

Ivermectin 1

Sometribove 1

Afoxolaner 1

What to do with this reaction

Read how death-coded share differs from a mortality rate before drawing conclusions. Understanding adverse events
Browse the full reaction directory to compare report counts across reaction types. All reactions

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Abnormal birth weight (#1905 of 2,481 by report volume); death-coded 41.7%. PlainBreed reaction plate · death-coded share stamp 41.7% · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →