Garlic
Garlic can be toxic to dogs and cats.This is because garlic contains organic thiosulfate compounds, which can damage red blood cells and lead to a condition called hemolytic anemia. Therefore, feeding garlic to pets is strongly not recommended.

Organic Thiosulfate Compounds
Organic thiosulfate compounds — such as allicin and brucillin — give garlic its distinctive flavor and aroma.
However, when consumed in excessive amounts, these compounds can irritate the digestive system and, in some pets, may trigger adverse effects such as anemia.
Red Blood Cells
Red blood cells are the most abundant cells in the bloodstream. They transport oxygen and carbon dioxide throughout the body. They contain a protein called hemoglobin, which binds to oxygen and plays a vital role in delivering it to tissues.
Red blood cells are also crucial for maintaining normal physiological functions, such as body temperature regulation and metabolic responses.
What Is Hemolytic Anemia?
Hemolytic anemia occurs when red blood cells are destroyed or when the body’s ability to produce new red blood cells is impaired, leading to a reduced number of red blood cells.
When this happens, the blood’s ability to transport oxygen and carbon dioxide is compromised, resulting in a range of symptoms. These symptoms may include pale or yellow gums and skin, vomiting, diarrhea, lethargy, loss of appetite, breathing difficulties, and anemia. If you notice any of these signs, seek veterinary care immediately.
Symptoms After Eating Garlic
In some cases, symptoms may not appear immediately but can develop over time. Watch for the following signs:
- Vomiting
- Diarrhea
- Lethargy
- Loss of appetite
- Breathing difficulties
- Dizziness caused by anemia
- Abnormal urine color (red, brown, or orange)
If you suspect your dog or cat has eaten garlic, contact a veterinarian right away.
What to Do If Your Pet Has Eaten Garlic
- Consult a veterinarian immediately: Seek professional advice and treatment as soon as possible.
- Record the amount consumed: Note how much garlic your pet may have eaten.
- Encourage water intake: Give your pet plenty of water to help flush out the toxins from their system.
- Pursue active treatment: Depending on symptoms, the veterinarian may administer treatments such as fluid therapy, medication, or blood transfusions.
Veterinary Treatment
Treatment will vary depending on the amount of garlic consumed, the pet’s size, and their condition. Common veterinary procedures include:
- Blood tests: To check red blood cell levels and detect anemia.
- Fluid therapy: To prevent dehydration and help remove toxins from the blood.
- Medication: To support red blood cell production and treat symptoms.
- Blood transfusion: In severe cases, a transfusion may be necessary to replenish red blood cells.
Because treatment varies case by case, it’s essential to consult a veterinarian immediately if garlic ingestion is suspected.
Summary
Garlic is toxic to dogs and cats because it damages red blood cells and can cause hemolytic anemia, which affects the body’s ability to transport oxygen. Symptoms may develop gradually and can include vomiting, lethargy, weakness, and abnormal urine color. If your pet consumes garlic — even in small amounts — seek veterinary help immediately, record the amount eaten, and provide plenty of water. Early medical intervention is key to preventing serious complications.