Buddhists are encouraged to protect life, including the lives of animals, which is said to create karmic causes for a long life in this and future lives, as well as good health, a pleasing appearance and a favorable rebirth.
Duhkha is often translated as suffering, and so it’s understandable that most people assume duhkha is limited to the physical and mental suffering that we all experience.
Without denying that beings have the capacity to do horrific things, Buddhists believe that no being—ordinary or supernatural — is all bad or inherently evil.