Are all toads poiseonous to dogs?

Answers:
We have never had a problem with toads and dogs. However, we did have a problem with cane toads secreting in the drinking water of puppies. If a dog eats a toad, and froths at the mouth, a vet told us to as gently as possible, flush the dog's mouth out with a hose, with the spray on.

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no. As far as I know the only toad that is really a problem with dogs is the cane toad. It secretes a poison on its skin.