Ingestion of any portion of these common shrubs is an emergency condition. So too is consumption of any part of the oleander shrub. The toxic principles in this plant interfere with cardiac function, and can be deadly. Another holiday plant, mistletoe, is very dangerous if consumed as well. Mistletoe contains a number of toxic substances that produce severe vomiting, diarrhea, shock, and cardiovascular collapse.
Death can occur within hours of ingesting a toxic dose.
As a responsible pet owner, you need to be aware of the potential dangers that some ornamental plants present. Take care to know the common and scientific names of all the house and ornamental plants on your property and in your home. It could literally mean the difference between life and death. Plants should be arranged in such a way as to limit their exposure to family pets. As most of us are not botanical whiz kids, the correct name of the involved plant is the most important piece of information to provide.