Here are some theme suggestions. I recently learned about these plants and I thought I might share them:
passiflora,
love in a mist,
Quesnelia,
Parodia herzogii, and
heather thistle (or at least I think that's what it's called this was the only picture I could find of this plant).
There are a lot of cool shapes and colors in those so hopefully you will get some inspiration from them.
I also want to make a suggestion for a domestic breed. It would be really cute to have a "toy" breed. They could be half the size of the wild ones with bigger ears, smaller horns, small button noses, short little legs, and a lot more fluff. They could maybe have curled tails too and possibly shorter muzzles.