TL;DR: Eating a dead mouse can expose cats to parasites, bacteria, or rodenticide poisoning; monitor your cat for 72 hours and seek emergency care for symptoms like lethargy or unusual bleeding.
What are the risks if my cat eats a dead mouse?
While hunting is natural, consuming a dead rodent exposes felines to various biological and chemical hazards:
- Intestinal parasites such as roundworms and toxoplasmosis.
- Bacterial infections including Salmonella.
- Secondary rodenticide poisoning if the mouse recently consumed toxic bait.
Is it an emergency if my cat eats a dead mouse?
The urgency is typically medium, but it becomes a high-priority emergency if the mouse was killed by poison. Take the following actions:
- Monitor your cat closely for a full 72 hours.
- Check for immediate warning signs like lethargy or pale gums.
- Watch for critical symptoms including unusual bleeding, vomiting, or loss of coordination.
How does taking a photo help the veterinarian triage my cat?
Capturing a photo of the rodent or the cat’s vomit is a vital diagnostic tool that allows a veterinarian to:
- Identify the rodent species to determine specific parasite risks.
- Look for physical signs of anticoagulant poisoning, such as unusual bruising or bleeding on the carcass.
Clinical Context (Merck Veterinary Manual)
Cats that hunt and eat rodents risk exposure to plague, tularemia, and internal parasites. Plague epizootics can cause high mortality in wild rodent populations, leading infected fleas to seek alternative hosts, including cats. Clinical signs of plague in cats can include fever, lethargy, submandibular lymphadenopathy (possibly bilateral), oral and lingual ulcers, skin abscesses, ocular discharge, diarrhea, and vomiting. Tularemia is transmitted through infected animals or via respiratory droplet transmission. Liver flukes can be contracted by eating intermediate hosts such as lizards or frogs, potentially causing lethargy, fever, hepatomegaly, abdominal distention, jaundice, emaciation, anorexia, vomiting, and mucoid diarrhea.
Chapter: Infectious Disease
Source: The Merck Veterinary Manual, 11th Edition (Page 677)