Safety verdict
Consulted references classify the plant as toxic or irritating for that pet type.
Pet ingestion lookup
My dog ate Black Locust - what should I do?
Robinia spp.
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, lethargy, depression, and potential neurological signs such as ataxia or weakness.
Escalation note
The plant contains toxins that can cause severe systemic reactions. Seek immediate veterinary attention if your dog has consumed any part of this tree.
First aid at home
Remove any plant material still in your dog's mouth and from their reach, then call the ASPCA Animal Poison Control Center at (888) 426-4435 or your veterinarian. Do not induce vomiting unless a veterinarian or poison control specifically tells you to.
What to watch for
Earliest and most common: vomiting, depression, and refusing food. As poisoning progresses watch for weakness, labored or difficult breathing, and bloody diarrhea. The ASPCA notes severe cases can be fatal, so any of these signs after suspected exposure is an emergency.
Time window
Exact onset isn't well documented for dogs in the cited sources; assume signs can appear within a few hours of ingestion. Treat any known exposure as time-sensitive rather than waiting to see what develops.
When to call the vet
Call immediately if you saw your dog eat any part of the tree (seeds, pods, bark, leaves, or sprouts), or if you see vomiting, bloody stool, weakness, or labored breathing. Don't wait for symptoms to progress — call the ASPCA Animal Poison Control Center at (888) 426-4435 or your veterinarian right away.
What this means for your dog
Dogs that chew on black locust bark, leaves, seeds, or pods are at real risk: the ASPCA lists every part of the tree as toxic, and serious cases can progress to bloody diarrhea and breathing trouble. Treat any known ingestion as urgent — even a small amount of seed or fresh growth can hit a curious dog hard.
Sources: ASPCA.
Source references
Poison-control resources
This page summarizes source-bound plant-safety information and is not veterinary advice.