Last week my Saanen Buck was bitten by what would have been a huge Tiger snake....when we found him, no more than 10mins after being bitten he was already paralysed, foaming at the mouth, frantic breathing and in obvious pain when we moved him. Jack was a big boy, as big as our cows (Dexters). If it had of been one of our Pugs I beleive they would have died before we made to the Vet....unfortunately our local Vet would have charged us near on the $4000, but I know the Vet we use for all the Pugs an hr away would have charged under a grand.
Good luck with your babies...