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Ella, the native British toad, Bufus vulgarisis is much less toxic than some exotic species, e.g., Bufus blombergi, Bufus alvarius, and Bufus marinus. The signs of significant toxicity are inflammation of the mouth and pharynx with ptyalism (increased salivation/drooling) and retching, abdominal pain, vomiting, neurological and cardiovascular effects. In Britain, however, the signs are usually confined to local oral effects and so simply rinsing out Ben Wilson's mouth with copious amounts of water should suffice.
The common frog and pool frog (only found in East Anglia) aren't toxic to your dog but can cause gastrointestinal distress as evidenced by inappetence, vomiting and/or diarrhea. Please respond with further questions or concerns if you wish.
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