“The common religion of all classes of human beings, regardless of whosoever and whatsoever one may be, is devotional service. Even the animals may be included in devotional service to the Lord, and the best example is set by Shri Vajrangaji, or Hanuman, the great devotee of Lord Shri Rama.” (Shrila Prabhupada, Shrimad Bhagavatam, 2.8.18 Purport)