Michael,
Since you don't want to approach the 38 other Corgi owners individually, why don't you get a shirt printed. The front could have a picture of your Taylor with the www. GoCorgi logo in small print underneath and on the back it could say...
www.GoCorgi.com in large print; surely that would catch their eye enough to make them want to check it out.

as well as the people who may be willing to buy your book