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.
| 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.