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Infectious · Cats & dogs

Infectious diseases: common cat and dog infections and red flags

Browse infections by species, exposure and red flags; this index is not a test or diagnosis.

Editorial update: 2026-10-19 · Version 2026.10.19.2
Veterinary review: pending

Infectious diseases: common cat and dog infections and red flags

Educational pet-health and visit-preparation reference. Not a diagnosis, prescription, dosage recommendation or substitute for a veterinarian. Veterinary review: pending. This is an editorial educational reference. Checking sources is not a veterinary assessment of your pet.

What this index covers

Covers panleukopenia, herpesvirus/calicivirus, FIP, FeLV/FIV, distemper, parvovirus, kennel cough and influenza.

Section sources: Merck Veterinary Manual: Pet Owners Overview · AAHA Clinical Practice Guidelines

Which clues to organize

Track vaccine status, boarding or shelter exposure, fever-like behavior, discharge, vomiting/diarrhea and illness in housemates.

Section sources: AAHA: Preparing for a successful veterinary visit

When not to wait

Young pets with anorexia/dehydration, bloody stool, breathing effort, neurologic signs, collapse or rapid worsening need same-day or emergency care.

Section sources: Merck Veterinary Manual: When to see a veterinarian

Prepare for the visit

Bring vaccine and exposure timeline, videos, weight and medicines; call ahead about isolation and arrival.

Section sources: AAHA: Preparing for a successful veterinary visit

Use this guide to prepare for a visit

Disease index note Topic/question: Onset and change: Photos/videos: Appetite, water, urine/stool: Medicines/exposures: Questions for clinic:

Record observations for this topic Visit checklist

Sources & editorial context

What changed

将疾病索引改为按覆盖范围、观察用途、红旗信号和就诊资料组织,待专业医学复核。

Dates identify editorial updates and source checks, not clinical approval. All four languages were edited together; native-language and veterinary review remain pending.

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