We have recently started ordering dog stuff (including Orijen food) from Zoo Plus. They have a .ie site and a .co.uk site and we’ve ordered from both with the same account. It works out cheaper from the .co.uk site and delivery is still free over a certain amount 🙂
The order dispatch email gives a tracking number but no details about what to use to track it. It seems that they are based in Germany and the stuff so far is dispatched from there, so the DHL Germany site is the place to enter your tracking number. Just enter it in the Sendungsverfolgung box.
Alternatively, if you use the Delivery Status widget on OS X you can track DHL Germany shipments using that.