Begonia Flower Toxic. Kidney failure in grazing animals vomiting salivation in dogscats. 01042020 All of the over 1000 species of begonia are toxic to pets.
The plant is considered mildly-toxic but the roots are especially poisonous. Most toxic part is underground. However begonias especially their tubers are highly poisonous to household pets such as dogs and cats.
For others only certain parts of the plant are harmful.
The first calcium oxalate crystals are one of the more common plant toxins and can be found in hundreds of popular houseplants and ornamentals. Begonias are popular flowers that many people grow in their homes or gardens. For some plants all parts of the plant are poisonous. 01042020 All of the over 1000 species of begonia are toxic to pets.