Can you feel a delicious, anticipatory sense of expansion right now? That is desire, and it is now.
This sense of being aligned with your desires, enjoying them as if they were created in reality right now in this moment (rather than as something that will happen 'someday', something that is lacking that must be fulfilled before you will be satisfied) -- this is pure, childlike desire at its most wonderful, and is perfectly compatible with being present in the moment and living like a dog.
Dog desire -- that's pretty picturesque, isn't it?
Just like Woofie, you can be entirely present, and at the same time filled with that delightful allowingness -- "Yes! Yes! Yes!"