Toxicological trivia on August 25, 2009: What parts of Nerium Oleander are considered to be  toxic?
a) Leaves,
b) Flowers,
c) All parts.

Answer: c. All parts of Nerium oleander are considered to be toxic, as they contain cardiac glycosides that have the potential to cause serious effects—including gastrointestinal tract irritation, abnormal heart function, hypothermia and even death.Monograph Info: plant poisoning in pets (Only avilable in Spanish). Read also in English:  Poisonous Plants for pet (From ASPCA)