There are many different types of plants found in the home and garden. Some plants contain toxic compounds that have adverse effects on various body organs (e.g. the heart, kidneys or liver) whereas others are of low toxicity. It is also important to note that some plants that are toxic to cats may not be toxic to dogs and vice versa.
Acorns from oaks (Quercus species) may cause vomiting and diarrhoea. Occasionally an itchy rash and swelling of the lips or around the eyes occurs. There is also a risk that the acorns may block the gut.
Conkers from the horse chestnut (Aesculus hippocastanum) can cause gastrointestinal signs. If swallowed whole or in a large chunks there is also a risk that the conkers may obstruct the gut.
These plants (mainly Sago Palm, Cycas revoluta), even ingested in small amounts, can cause gastrointestinal effects, severe liver damage and death if ingested.
Daffodils (Narcissus species) contains irritant compounds that can cause drooling, vomiting and diarrhoea. Severe cases are uncommon but there are reports of collapse, slow heart rate, low blood pressure and low body temperature.
Hops (Humulus lupulus), either as spent hops from brewing or the plant itself, can cause a very high body temperature in dogs. Deaths have been reported in dogs after ingestion of hops.
This plant can cause gastrointestinal signs and increased heart rate. There is also the risk of tremor, twitching and high body temperature.
Lilies i.e. the Lilium (true lily) and Hemerocallis (day lily) species, are poisonous to cats and cause kidney failure. This is not seen in dogs who are only at risk of gastrointestinal upset.
Clinical effects reported after ingestion of peace lily (Spathiphyllum species) include drooling, diarrhoea, vomiting, lethargy, ataxia and thirst. Kidney failure has been reported in a small number of cats.
PIERIS AND RHODODENDRON
These plants can cause gastrointestinal signs and potentially weakness, slow heart rate and low blood pressure.