Some plants are toxic and dangerous to humans and animals, particularly dogs and cats. Below is a list of the main plants that cause issues, together with symptoms when ingested.
Castor oil plant
Toxic to humans - the seeds, flowers and leaves. A few seeds can be fatal to a child.
Toxic to humans. The leaves, bark and seeds are poisonous. The seeds are particularly toxic for children.
Toxic to humans. The round purple/black berries on this plant are highly toxic.
Rhus or wax tree
Toxic to humans. This plant can trigger strong allergic reactions in many people, causing rashes, redness, itchiness and blisters over the course of a week or longer. Avoid contact even as a result of touching clothing or tools, or exposure to sawdust or ash.
Toxic to cats and dogs.
Symptoms: Vomiting, depression, diarrhea, anorexia, tremors, change in urine
Toxic to both cats and dogs. The actual bulbs, they
contain the most toxins.
Symptoms: Vomiting, depression, diarrhea, abdominal pain, hypersalivation,
Not only toxic to cats and dogs, this is also dangerous
for horses, goats and sheep–and ingestion of just a few leaves can cause
Symptoms: Acute digestive upset, excessive drooling, loss of appetite,
frequent bowel movements/diarrhea, colic, depression, weakness, loss of
coordination, stupor, leg paralysis, weak heart rate and recumbency for 2 or
more days; at this point, improvement may be seen or the animal may become
comatose and die.
Toxic to both cats and dogs.
Symptoms: Vomiting, diarrhea.
Toxic to both dogs and cats. The
tubers are the most toxic part.
Symptoms: Oral irritation, intense burning and irritation of mouth, tongue
and lips, excessive drooling, vomiting, difficulty swallowing.
Mildly poisonous and symptoms: Mild gastrointestinal signs, mild dermatitis.
dogs and cats may
still be drawn to it. It’s not likely to cause death, but can cause quite a bit of discomfort.. Symptoms: Vomiting, diarrhea, hypersalivation, dermatitis.
to both cats and dogs. The highest concentration of the toxic component is
typically located in the root portion of the plant.
Symptoms: gastrointestinal irritation, including intense vomiting.
Fatalities have also been reported in some cases.
Toxic to cats and dogs; the
bulbs being the most toxic part.
Symptoms: Vomiting, salvation, diarrhea; large ingestions cause convulsions,
low blood pressure, tremors and cardiac arrhythmias
The corm (bulb) that is most toxic to dogs and
cats. Symptoms: Salivation, vomiting, drooling, lethargy, diarrhea.
Ivy foliage is more toxic than its berries.
Symptoms: Vomiting, abdominal pain, hypersalivation, diarrhea.
Members of the Lilium family
are considered to be highly toxic to cats, even when very small portions are
ingested. Many types of lily (Tiger, Asian, Japanese Show, Easter, Stargazer,
Casa Blanca) can cause kidney failure in cats. Curiously, lilies are not toxic
Symptoms: Kidney failure.
Quite toxic to dogs and cats.
Symptoms: Vomiting, profound depression, weakness, anorexia, and
diarrhea are common; may be followed by seizures, difficulty breathing, rapid,
weak pulse, dilated pupils, kidney or liver failure, coma, respiratory
paralysis and death.
Morning glory can cause hallucinations in cats and dogs. Symptoms: Gastrointestinal upset, agitation, tremors, disorientation,
ataxia, anorexia, hallucinations.
All parts contain a highly toxic cardiac glycoside and can cause a number of problems.
Symptoms: Colic, diarrhea (possibly bloody), sweating, incoordination,
shallow/difficult breathing, muscle tremors, recumbency, and possibly death
from cardiac failure.
Symptoms: Irritating to the mouth and stomach, sometimes causing mild
Cats and dogs can both have adverse reactions to
chewing or ingesting it.
Symptoms: Oral irritation, intense burning and irritation of mouth,
tongue and lips, excessive
They are apparently very tasty to animals, and unfortunately
highly toxic–all parts are poisonous, but especially the seeds.
Symptoms: Vomiting, melena, icterus, increased thirst, hemorrhagic
gastroenteritis, bruising, coagulopathy, liver damage, liver failure, death
plants probably won’t prove lethal for your pet, they can provide a good dose
of discomfort. for cats and dogs.
Symptoms: Hypersalivation, inappetence, severe gastrointestinal upset,
diarrhea, drowsiness, CNS depression, confusion, behavioral change, weakness,
dilated pupils, slow heart rate.
It’s the bulb of the tulip and narcissus plants that have the highest
concentration of toxins. Be cautious if you have a dog that digs.
Symptoms: Intense gastrointestinal irritation, drooling, loss of
appetite, depression of the central nervous system, convulsions and cardiac