Do you know your dogs? Take our quiz and find out!

Bring Your Dog to Work Day has been and gone again! On Friday 21, people all across the country got their pooch ready for work on the annual holiday.

This was the 21st celebration of the holiday in the US, and the sixth in the UK, after being established in 2014. The day of fun is intended to raise money for All Dogs Matter, a London-based charity that rescues and re-homes more than 400 dogs a year.

Although it's primary focus is to help dogs in need, studies have shown that having your furry friend with you at work can help to reduce your stress levels.

To celebrate the wholesome holiday, here is a fun doggy quiz! How well do you know man's best friend?