Reaction profile

The FDA adverse-event record for shivering

1,359 FDA adverse-event reports reference shivering (VeDDRA 1905). See the species, breeds, and drugs most associated with it below.

1,359
reports citing this reaction
8.8%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
1,359
Total Reports
119
Deaths
8.8%
Death Rate

Species Most Affected

Dog 1,250
Cat 85
Horse 13
Human 7
Rabbit 1
Pig 1
Goat 1
Prosimian 1

Breeds Most Affected

Chihuahua 100
Terrier - Yorkshire 87
Crossbred Canine/dog 86
Retriever - Labrador 68
Shih Tzu 57
Domestic Shorthair 56
Maltese 54
Pit Bull 38
Terrier (unspecified) 33
Terrier - Jack Russell 31

Associated Drugs

Milbemycin Oxime + Spinosad 406
Afoxolaner 91
Spinosad 77
Trilostane 74
Fluralaner Chew Tablets 61
Pyrantel Pamoate;Sarolaner 58
Ivermectin + Pyrantel As Pamoate Salt 55
Fluralaner 13.64% 12-Week Chew 45
Moxidectin 40
Milbemycin Oxime + Praziquantel 37
Oclacitinib Maleate 36
Sarolaner 34
Imidacloprid + Moxidectin 33
Maropitant Citrate 30
Carprofen 29
Selamectin 28
Nitenpyram 27
Lotilaner 25
Bedinvetmab 20
Prednisone 19

Shivering Reaction Insights

1,359 reports name Shivering; 119 recorded a death outcome (8.8% of reported events, not a population-level mortality rate). VeDDRA code: 1905.

By species: Dog (1,250 reports), Cat (85 reports), Horse (13 reports). By breed: Chihuahua (100), Terrier - Yorkshire (87), Crossbred Canine/dog (86).

Most co-reported drugs: Milbemycin Oxime + Spinosad (406 reports), Afoxolaner (91 reports), Spinosad (77 reports), Trilostane (74 reports).

Read these counts as reporting volume, not risk: per our methodology, co-reporting reflects temporal association captured in voluntary submissions, not proof that a drug caused this reaction. A widely-prescribed drug will rack up more raw co-reports at an identical true rate than a rarely-used one, so compare within similar-exposure products.

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

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.