Lessons from the example of Lord Caitanya.

"How the Kṛṣṇa consciousness movement can attract the attention of the whole world and how each and every man can feel pleasure in this Kṛṣṇa consciousness is stated in the Padma Purāṇa as follows: 'A person who is engaged in devotional service in full Kṛṣṇa consciousness is to be understood to be doing the best service to the whole world and to be pleasing everyone in the world. In addition to human society, he is pleasing even the trees and animals, because they also become attracted by such a movement.' A practical example of this was shown by Lord Caitanya when He was traveling through the forests of Jhārikhaṇḍa in central India for spreading His saṅkīrtana movement. The tigers, the elephants, the deer and all the other wild animals joined Him and were participating, in their own ways, by dancing and chanting Hare Kṛṣṇa."

(Nectar of Devotion, Chapter 1)

"Haridāsa Ṭhākura said that the chanting of the holy names is so powerful that even if one chants in the remotest parts of the jungle, the trees and animals will advance in Kṛṣṇa consciousness simply by hearing the vibration. This was actually proved by Śrī Caitanya Mahāprabhu Himself when He passed through the forest of Jhārikhaṇḍa. At that time the tigers, snakes, deer and all other animals abandoned their natural animosity and began chanting and dancing in saṅkīrtana. Of course, we cannot imitate the activities of Śrī Caitanya Mahāprabhu, but we should follow in His footsteps. We are not powerful enough to enchant the lower animals such as tigers, snakes, cats and dogs or entice them to dance, but by chanting the holy names of the Lord we can actually convert many people throughout the world to Kṛṣṇa consciousness."

https://prabhupadaconnect.com/Lord-Chaitanya-Induced-the-Animals-to-Chant.html