honestly, at the very LEAST, you need to CALL your vet and ask him. He will know best. Just because one dog is okay eating a frog, is not to say yours will be ok. some have iron clad stomachs and would be fine, but yours obviously does not because he is vomiting and has diarrhea. Better to be safe than sorry. I lost my 5 1/2 yr old Sunnie almost a year ago from flea medication.... yet the other 4 dogs were fine. Sunnie had a more sensitive stomach and it ended up killing him. Please call your vet. a phone call costs nothing.