[x] Some Krebs develop strong enough claws and hardy enough digestive systems to eat Stone Seedlings.... and also Roundmen, but mostly Stone Seedlings.
[X] [Seedling] Develop ability to take nutrients from Stone Seedlings by extended root system - parasitism. Not enough to cause harm, but enough to live. Due to this adaptation leaves became very small and succulent, because of lesser need in photosynthesis and possibility to store excess nutrients in the leaves.