The leaves of this plant contain toxins called calcium oxalate crystals, which are dangerous to canines.

Due to the calcium oxalate crystals, when dogs eat any amount of these plants, they're likely to feel a burning feeling on their mouths, tongues, and lips. It isn't uncommon for them to drool and vomit, as well as having difficulty breathing. Source: Chewy Editorial, 2020. Read more about the effects of Dieffenbachia poisoning in dogs here: https://wagwalking.com/condition/dieffenbachia-poisoning Photo by The Spruce / Krystal Slagle