GameSHOUT is reporting that Nintendo UK is having a hard time keeping Nintendogs on the shelves this season.
According to their article, retailers all over the UK are reporting low or insufficient stock, making the game very difficult to find and eBayers are making a mint selling the copies they have.
Some online retailers are reported to have sold out their blue and pink Nintendogs/Nintendo DS bundles; others are reporting limited stocks. Restocking is expected to come in a week, but at this point, few sellers are guaranteeing anything for Christmas.