Browse Pet Safety Reports

18,026 FDA adverse event reports for pets.

FDA Veterinary Adverse Event Database

Browse 18,026 adverse event reports collected by the FDA's Center for Veterinary Medicine. Each report includes the animal species, breed, drug or product involved, observed reactions, and outcome. Reports flagged as "serious" involve death, life-threatening conditions, or hospitalization. Use the filters to narrow results by species, outcome severity, or keyword. Note that a higher number of reports does not necessarily indicate a less safe product, widely prescribed drugs naturally accumulate more reports.

Pet Adverse Event Reports

Browse 18,026 FDA veterinary adverse event reports.

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Date Species Breed Drug Reaction Outcome
May 26, 2015 Cat Cat (unknown) Imidacloprid; Moxidectin Application site alopecia; Application site lesion Outcome Unknown
May 26, 2015 Cat Domestic Shorthair Selamectin Application site alopecia; Application site lesion; Application site infectio... Ongoing
May 26, 2015 Cat Domestic Shorthair Enrofloxacin Lethargy (see also Central nervous system depression in 'Neurological'); Anor... Recovered/Normal
May 26, 2015 Cat Domestic Shorthair Selamectin Application site alopecia Outcome Unknown
May 25, 2015 Cat Domestic Mediumhair Selamectin Application site lesion; Skin sore; Fever; Alopecia; Localised hair loss Ongoing
May 24, 2015 Cat Domestic Shorthair Imidacloprid; Moxidectin Application site alopecia Recovered/Normal
May 23, 2015 Dog Retriever - Labrador Desoxycorticosterone Pivalate Hyperpigmentation; Alopecia; Other abnormal test result NOS Ongoing
May 22, 2015 Cat Domestic Shorthair, Domesti... Selamectin Application site alopecia Ongoing
May 22, 2015 Cat Domestic Shorthair Selamectin Application site alopecia; Skin sore; Excessive licking and/or grooming Ongoing
May 22, 2015 Cat Cat (unknown) Selamectin Application site alopecia Outcome Unknown
May 22, 2015 Cat Domestic Longhair Cefovecin Alopecia; Excessive licking and/or grooming Ongoing
May 21, 2015 Dog Weimaraner Afoxolaner Hives (see also 'Skin'); Lethargy (see also Central nervous system depression... Recovered/Normal
May 21, 2015 Dog Weimaraner Prednisolone; Trimeprazine Tartrate Behavioural disorder NOS; Eye disorder NOS (for photophobia see 'neurological... Ongoing
May 21, 2015 Cat Domestic Shorthair Praziquantel; Emodepside Hyperactivity; Vomiting; Alopecia NOS; Abscess NOS Outcome Unknown
May 19, 2015 Cat Domestic Shorthair Selamectin Application site alopecia; Alopecia local; Pruritus Ongoing
May 19, 2015 Dog Hound - Basset Imidacloprid; Moxidectin Application site alopecia; Application site erythema Outcome Unknown
May 18, 2015 Dog Retriever - Labrador Oclacitinib Maleate Alopecia; Ear irritation; Hair modification NOS Ongoing
May 18, 2015 Cat Domestic Shorthair Praziquantel; Emodepside Application site alopecia Outcome Unknown
May 18, 2015 Cat Domestic Shorthair Praziquantel; Emodepside Application site alopecia Outcome Unknown
May 18, 2015 Cat Domestic Shorthair Praziquantel; Emodepside Application site alopecia Outcome Unknown
May 18, 2015 Cat Domestic Longhair Selamectin Application site alopecia; Dry skin; Application site burn; Application site ... Outcome Unknown
May 18, 2015 Cat Domestic Shorthair Praziquantel; Emodepside Application site alopecia Outcome Unknown
May 18, 2015 Dog Retriever - Labrador Spinosad; Milbemycin Oxime Aggression; Behavioural disorder NOS; Alopecia Outcome Unknown
May 17, 2015 Cat Siamese Imidacloprid; Moxidectin Application site alopecia Outcome Unknown
May 17, 2015 Cat Domestic Shorthair Imidacloprid; Moxidectin Application site alopecia Recovered/Normal
May 16, 2015 Cat Domestic Shorthair Praziquantel; Emodepside Application site alopecia; Application site erythema Outcome Unknown
May 16, 2015 Cat Cat (unknown) Selamectin Application site alopecia Outcome Unknown
May 15, 2015 Cat Domestic Shorthair Cefovecin Application site alopecia; Application site erythema; Application site crust;... Recovered/Normal
May 15, 2015 Cat Siamese Imidacloprid; Moxidectin Application site alopecia Recovered/Normal
May 15, 2015 Dog Shiba Inu Fluralaner Chew Tablets Pustules; Skin sore; Crust; Allergic pruritus; Skin scab; Alopecia local Recovered/Normal
May 15, 2015 Cat Domestic Shorthair Imidacloprid; Moxidectin Excessive licking and/or grooming; Alopecia; Application site alopecia Outcome Unknown
May 15, 2015 Dog Retriever - Labrador Spinosad Pruritus; Alopecia; Skin disorders NOS Recovered/Normal
May 15, 2015 Dog Siberian Husky Imidacloprid; Moxidectin Limb weakness; Hind limb paralysis; Death by euthanasia; Application site alo... Euthanized
May 15, 2015 Dog Collie - Border Fluralaner Chew Tablets Boil; Hair loss NOS; Itching; Alopecia; Papule; Erythema (for urticaria see I... Ongoing
May 14, 2015 Cat Domestic Mediumhair Selamectin Application site alopecia Outcome Unknown
May 14, 2015 Cat Domestic Shorthair Selamectin Application site alopecia Outcome Unknown
May 14, 2015 Dog Retriever - Labrador Afoxolaner Scratching; Self trauma; Alopecia NOS; Not eating Outcome Unknown
May 14, 2015 Dog Poodle (unspecified), Schna... Cefovecin Alopecia local; Skin sore; Lack of efficacy - NOS; Localised itching; Licking... Ongoing
May 13, 2015 Cat Domestic Shorthair Imidacloprid; Moxidectin Application site alopecia; Application site erythema; Application site ulcer;... Outcome Unknown
May 13, 2015 Dog Retriever - Labrador, Corgi... Moxidectin Alopecia; Vomiting; Bloody diarrhoea Ongoing
May 12, 2015 Cat Cat (unknown) Phytosphingosine Alopecia local; Application site scab Outcome Unknown
May 12, 2015 Dog Terrier - Boston Selamectin Application site alopecia; Application site scab; Application site irritation... Ongoing
May 11, 2015 Cat Domestic Shorthair Selamectin Application site alopecia; Application site lesion; Application site irritati... Ongoing
May 11, 2015 Dog Chihuahua Enrofloxacin Hind limb paralysis; Vocalisation; Aggression; Paresis; Constipation; Loose s... Outcome Unknown
May 11, 2015 Dog Mountain Dog - Bernese Amitraz Falling; Stumbling gait; Alopecia local; Pruritus; Other abnormal test result... Ongoing
May 11, 2015 Cat Domestic Longhair Selamectin Application site alopecia; Application site irritation Ongoing
May 11, 2015 Cat Domestic Shorthair Selamectin Application site alopecia; Application site inflammation Outcome Unknown
May 10, 2015 Cat Domestic Shorthair Imidacloprid; Moxidectin Application site alopecia; Application site erythema Outcome Unknown
May 10, 2015 Dog Bulldog Trilostane Dermatitis; Ulcerative dermatitis; Erythema (for urticaria see Immune SOC); A... Ongoing
May 9, 2015 Dog Bulldog Oclacitinib Maleate Alopecia Ongoing

Frequently Asked Questions

Contact your veterinarian immediately. If the reaction is severe, difficulty breathing, seizures, collapse, or severe swelling, seek emergency veterinary care right away. After your pet is stabilized, report the adverse event to the FDA through safetyreporting.hhs.gov or by calling 1-888-FDA-VETS (1-888-332-8387). Reporting helps the FDA identify safety issues that can lead to label changes or product recalls.

Dogs account for the majority of adverse event reports, followed by cats. This reflects both the larger pet population and wider range of medications for these species. Flea and tick products, pain medications (NSAIDs), and heartworm preventives are among the product categories with the highest report counts across all species.

Not necessarily. A drug used by millions of pets will have more reports in absolute numbers than a niche product, even if the actual rate of adverse events is lower. The FDA uses these reports as one of many tools to evaluate drug safety, looking for patterns and statistical signals rather than raw counts alone. Always consult your veterinarian before changing any medication.