First off, because I know this is the first thing people will say - he is already at the vet now with DH.
He's just eaten 3/4 of a large Christmas pudding out of a pedal bin with a flat flush top that he still managed to open (anyone want to guess what breed he is?)
He's at the vet now, and was there within 25 mins of eating it. Please give me good news stories of when your dogs have done this...? I'm hoping as we realised so quickly that vomiting will sort it?