Dog Health Questions? Ask a Dog Vet for Answers ASAP
Hello, thanks for the question.
Campanula is not listed as a toxic plant to dogs or cats on the ASPCA website listing of toxic plants.
But they do list it as a plant that will cause vomiting, diarrhea and gastrointestinal iritation.
So while not truly toxic if your animals like to munch on plants in your garden I wouldn't recommend planting it.