Safety verdict
Consulted references classify the plant as toxic or irritating for that pet type.
Pet ingestion lookup
My dog ate Yarrow - what should I do?
Achillea millefolium
Potentially toxic
Contact your veterinarian or an animal poison-control resource now, especially if any amount was chewed or swallowed.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Signs to watch for
Vomiting, diarrhea, and increased salivation.
Escalation note
While typically mild, ingestion can cause significant stomach upset. Always consult a veterinarian if your dog shows signs of illness after exposure.
First aid at home
Gently wipe out your dog's mouth with a damp cloth to remove any plant residue and offer fresh water. Do not induce vomiting at home. Call your veterinarian or the ASPCA APCC at (888) 426-4435 before giving any treatment.
What to watch for
Most-common signs are vomiting, diarrhea, drooling, and loss of appetite. Some dogs also show colic-style abdominal discomfort, depression, or skin irritation (dermatitis) where the plant contacted the skin.
Time window
Onset is typically within a few hours of ingestion. Most dogs recover within 24–48 hours with supportive care; ASPCA notes yarrow is not organ-toxic, so persistent signs beyond that window warrant a vet recheck.
When to call the vet
Call your vet or ASPCA Animal Poison Control (888-426-4435) if your dog is vomiting more than once or twice, has bloody or persistent diarrhea, won't eat or drink for more than a few hours, or seems unusually depressed or wobbly. Small or young dogs and any dog that ate a large amount should be evaluated promptly.
What this means for your dog
Dogs can get sick from chewing yarrow, but it is rarely a true emergency. ASPCA lists yarrow as toxic to dogs because of its glycoalkaloids, monoterpenes, and sesquiterpene lactones, and the typical picture is gastrointestinal upset rather than organ damage.
Sources: ASPCA.
Source references
Poison-control resources
This page summarizes source-bound plant-safety information and is not veterinary advice.