Within this material world there are various types of living entities, and the different types of reptiles and scorpions mentioned in this verse are also provided with their sustenance by the arrangement of the Supreme Personality of Godhead. The point is that everyone is taking his eatables from the planet earth. According to one’s association with the material qualities, one develops a certain type of character. Payaḥ-pānaṁ bhujaṅgānām: if one feeds a serpent milk, the snake will simply increase his venom. However, if one supplies milk to a talented sage or saint, the sage will develop finer brain tissues by which he can contemplate higher, spiritual life. Thus the Lord is supplying everyone food, but according to the living entity’s association with the modes of material nature, the living entity develops his specific character.