Everyone Can Benefit

"The word sarva-bhūteṣu is significant because it applies not only to species of life. The devotee can do good not only to humanity but to all living entities as well. Everyone can benefit spiritually by the chanting of the Hare Kṛṣṇa mahā-mantra. When the transcendental vibration of Hare Kṛṣṇa is sounded, even the trees, animals and insects benefit. Thus when one chants the Hare Kṛṣṇa mahā-mantra loudly, he actually shows mercy to all living entities. To spread the Kṛṣṇa consciousness movement throughout the world, the devotees should be satisfied in all conditions."

Srimad Bhagavatam 4.31.19 Purport