So sorry to hear about the loss of your beloved dog!
I had a very different experience but along the same lines in Disneyland a few months ago. You can read my thoughts at the post below. Basically I’d just say that we have to keep living our lives, allow ourselves to grieve, but continue to find joy in all the places we can find it.
Maybe you’ll have a moment at Disneyland where you metaphorically find Zuzu’s petals or hear a bell ring (reference to It’s a Wonderful Life), and suddenly you’ll feel a closeness to your companion and you’ll be at peace knowing they have moved on.