Yes, Octopus Tree is toxic to dogs!
Dogs accidentally consuming the Octopus Tree plants can show the following clinical symptoms: Vomiting, Prolonged Depression, Incoordination, Hypersalivaton, Sleepiness Or Excitation, Dilated Pupils, Low Body Temperature, Low Blood Pressure, Coma, Seizure And Death (In Rare Cases).
Octopus Tree consumption is also toxic to Cats.
Toxic Principles Of Octopus Tree: Terpenoids, saponins, insoluble oxalates.
More Info About The Octopus Tree Plant
Scientific Name: Schefflera or Brassia actinoplylla
Family: Araliaceae.
Also known as: Schefflera, Umbrella Tree, Australian Ivy Palm, Starleaf.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.