Is Tree Tobacco Toxic to Dogs?
Also known as: Nicotiana glauca, Mustard Tree · Nicotiana glauca
What makes it toxic
Anabasine and nicotine alkaloids throughout the plant, concentrated in the leaves. They stimulate then block nicotinic nerve receptors, ending in respiratory muscle paralysis.
Warning signs to watch for
Drooling, vomiting and diarrhea first, then muscle tremors, excitement, weakness, slow shallow breathing, dilated pupils and collapse, typically within an hour.
What to do if your dog eats it
Go to an emergency vet at once with the plant material. Activated charcoal and respiratory support early are decisive; do not wait to see whether symptoms pass.
Common questions
Is chewing a leaf enough to hurt a big dog?
It can cause vomiting and tremors even in a large dog, and bigger meals risk paralysis. Size helps but does not make the plant safe.
Does tree tobacco grow wild in warm climates?
Yes — it naturalizes in the Southwest and other warm regions, so recognize its smooth blue-green leaves and tubular yellow flowers on walks.
More plants checked for dogs
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.