I developed the idea of a buggy for toddlers that you pull not push
I developed the Toddler Tug a number of years ago but stopped selling it to develop a revised model and things got in the way. We are working again to launch a revised Toddler Tug.
When our elderly Border Terrier became less fit to walk I designed the Dug Tug based on the same principles.
The Tug 