"According to Vedic civilization, you are actually untouchable. Now we have come to touch you; therefore wash you must first. You are untouchable. In Indian civilization, dog is untouchable, and that is your best friend. So you are not touchable. Therefore we have to wash you. And unless your brain is washed, you cannot understand Kṛṣṇa. So it is necessary. Is that all right? Dog is your best friend. In India dog is untouchable. So "Man is known by his company." If your best friend is dog, then what you are? We can understand your position because you sleep with dog, you eat with dog, your best friend is dog, so what you are? You must be washed. It is a fact. Every woman, every man, has some dog."
Srila Prabhupada 11 Jan. 1977 room conversation..