I would suggest hiding the securters from the dog to prevent him pruning it.

Additional Common Names: Umbrella Tree, Australian Ivy Palm, Octopus Tree, Starleaf
Scientific Name: Schefflera
Family: Araliaceae
Toxicity: Toxic to Dogs, Toxic to Cats
Toxic Principles: Calcium oxalate crystals
Clinical Signs: Oral irritation, intense burning and irritation of the mouth, lips, tongue, excessive drooling, vomiting, difficulty in swallowing.

If your pet ingested this plant, contact your local veterinarian or the ASPCA Animal Poison Control Center at 888-426-4435.*

* A $65 consultation fee may apply.

The websites listing these scary effects all seem to be American.