• Host a feel-good fund raiser by soliciting photos of employee dog owners and their dogs, then charge everyone an entry fee for judging a Dog/Owner Look-Alike Contest -- with all the proceeds going to your local pet shelter.
• Put on a pet fair. Gather materials that are freely available from the ASPCA or local shelter, or ask a local pet sitter or pet store to help coordinate a Take Your Dog To Work Day where you work. There's lots of information to share with co-workers who may want to know more about popular dog breeds, adopting a dog, or their proper care, exercise and feeding.
• Fun should also be a big part of the day, so grab your camera and take lots of photos of the day's other events. These might include a "Top Dog" contest for best trick or friendliest dog; an owner/dog luncheon featuring lots of dog treats; or a Best Dressed list of dogs in costume.
So why NOT take your dog to work? At least for a day.
Celebrated in the UK too https://www.bringyourdogtoworkday.co.uk/
Very cute holiday. Woof!