What does 'Until the last dog is shot' mean?
It means until the very last possible moment or until every possibility is exausted:
You boys always stay until the last dog is shot
I will stay until the last dog is shot to complete this project by deadline
(Expression my mom who was born in 1917 in Wisconson always used.)
Idioms similar to 'Until the last dog is shot'
Buy our lists of British English, American English and Animal idioms in PDF format. They're perfect to use offline for reference or for use in class!