When an animal dies, his body is useful
Prabhupada said, “This body is useless. When an animal dies, his body is useful. It’s skin, it’s bone, it’s flesh, everything is useful. But the human body is useless after death. Whatever we can do in Krishna’s service is to our credit. While we’re living, we should serve Krishna. We should not give up serving Krishna. If someone is not serving Krishna, this is his misfortune.” How Prabhupada was dedicated! He didn’t care for his body, but he thought of others. I was deeply moved by his compassion.
Source: Remembrances of Srila Prabhupada by Sidhanta Das – Folio vedabase