According to wikipedia, and a fair number of internet pages with nearly identical wording:
"The exact spot where Hachiko waited in the train station is permanently marked with bronze paw-prints and text explaining his loyalty (text in Japanese)."
I went to Shibuya station today and could not find said bronze paw prints. Nor could I find anyone that both spoke english and had any idea what I was talking about when I asked about them. I could find no photographs of them on the internet. All references on the net have nearly the same wording. I suspect it's a fabrication.
Does anyone with a deeper familiarity with this area/station/story have a more definitive answer than my hunch? Do the prints and text exist?