Idioms: Dogs with answers

This week 'dogs' are the theme of our idioms. Do you know what they mean?

For information about eflex languages go to: http://www.eflexlanguages.com/
For a demonstration of our courses go to: http://www.eflexenglish.com/demo
Follow us on Facebook: https://www.facebook.com/eflexlanguages
Follow us on Twitter at: https://twitter.com/eflexlanguages