Vomiting in dogs and cats: reading the pattern

Vomiting is a common reason owners contact a veterinarian. The pattern—how often, when relative to meals, what comes up, and what else is happening—helps the clinician narrow the list of possibilities.

Useful observations to record

• How many times in the last 24 hours
• Whether it happens soon after eating or hours later
• Appearance: undigested food, fluid, foam, yellow bile, blood, or foreign material
• Appetite and water intake between episodes
• Presence of diarrhea, lethargy, or abdominal discomfort
• Any known access to garbage, plants, medications, or toys

Regurgitation versus vomiting

Regurgitation is passive and usually brings up undigested food with little effort. Vomiting involves abdominal effort and often precedes with nausea signs (drooling, restlessness). Distinguishing the two can matter for the veterinary workup.

Supportive care while arranging advice

• Withhold food for a short period only if your veterinarian has previously advised a species- and age-appropriate fasting approach; never withhold water
• Keep the pet quiet and prevent access to further inappropriate items
• Note urine output and general energy level

Do not give human anti-nausea medications or other drugs unless specifically directed by a veterinarian for that animal.

When to seek care promptly

Contact a veterinarian if vomiting is repeated, contains blood, is accompanied by weakness or collapse, or if the animal is a puppy, kitten, or has known medical conditions. Inability to keep water down is especially concerning.

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