Would Caesar's SMILE fruits have any animals/spirits trapped in them? I'd suspect the successful ones would. Momo's fruit definitely would, since Vegapunk made it
It's complicated!
When it comes to SMILEs, they technically contain animals, but they're lab-cloned and have never existed outside of the Fruit. Caeser didn't even know that Zoans contain actual animals.
The artificial Seiryu-Seiryu Fruit also contains a cloned dragon, which by PT!AU/Parting Tides standards is indeed a regular animal not a spirit. It's just more capable of existing on it's own because it actually has the instincts to survive, unlike the SMILE animals.
The Seraphim's Green Blood situation creates a connection to the Being in each respective Devil Fruit, but doesn't copy em over or steal them into a new Vessel.
Thanks for asking, I love rambling about my lore 💞💞💞💞💞
