The part and parcel of Kṛṣṇa, or God, the soul, is there everywhere. Don't think that simply human being has got soul. This is not very good philosophy, that the animals have no soul. They have got soul. You can practically examine. What is the symptom of possessing soul? First of all try to understand. That is explained in the Bhagavad-gītā: avināśi tu tad viddhi yena sarvam idaṁ tatam (BG 2.17). The presence of soul can be perceived when there is consciousness on the body. This is the proof.
When you pinch my body, I feel pain; when I pinch your body, you feel pain; when I pinch an animal's body, he also feels pain. Even I pinch even the tree's body, he feels pain. It is scientifically proved. Sir Jagadish Chandra Bose has proved by machine that when you cut a tree, it feels pain and it is recorded in this statistic machine. So everyone has got the soul. So how you can think . . .? When you take the animal to the slaughterhouse for killing, he cries. Why? Because he's feeling pain. He knows that, "I'm going to be killed." So there is soul.
So soul is there. You don't think that soul is not there. Soul is there. Therefore, a Kṛṣṇa conscious person who has realized God, he is samaḥ sarveṣu bhūteṣu, he's equal to all living entities. He'll feel pain even for cutting a tree. He'll pain feel . . . he'll feel pain even he traverse over an ant. There is a story that one hunter, he was killing in the forest all kinds of animals, and he was killing them half. So they were suffering too much severe pain. So Nārada Muni was going in that way. He saw that "These animals have been half killed, and they are so much suffering. Who is doing that?"
So he searched out the hunter. He requested, "Sir, you are killing the animals. Why don't you kill them all at a time? Why you are killing half? They are suffering. You'll have to suffer in that way." The hunter did not know that killing animals is sinful and he has to suffer again. So he said: "Sir, I am trained like this by my father. This is my profession. I do not know what is sin. But this is the first time I am hearing from you that killing this animal, especially in this way, is very much sinful."
So because he saw a saintly person, he got his sense. He asked him that, "How I can get rid of this sinful life?" So Nārada Muni suggested that, "I shall give you the way how you can become free from this sinful life." So he made him a disciple and asked him to chant this Hare Kṛṣṇa mantra and sit down on the bank of the Ganges, and the hunter said: "Sir, where shall I get my food?" Nārada Muni said: "I'll send you, don't bother. I'll send you food." So the village people, when they understood that the hunter has become a saintly person, so everyone used to come and see him. Somebody was bringing some rice, somebody wheat, somebody some sweets, some fruits, some flower. So huge quantity of foodstuff was coming. So in this way, he became a perfect saintly Vaiṣṇava.Later on, when Nārada Muni came to see him, he was coming to receive the spiritual master, jumping over the road. So when the hunter, now he became Vaiṣṇava, so Nārada Muni and his friend Parvata Muni asked, "Why you are jumping?" He said: "Sir, there are so many ants, so I was trying to save their life." The same hunter who was killing animals one time half-dead and was enjoying is no more interested to kill even an ant. This is called saintly life. Samaḥ sarveṣu bhūteṣu (BG 18.54). Samaḥ, equal to all living entities. Not that simply protection should be given to the human being.