Meeting animal welfare requirements is important for regulatory, scientific, and ethical reasons. Scientific research on animals is supported by many people because it is the only reliable mechanism for testing the safety and efficacy of compounds before exposure to humans. However, most people also support minimizing animal suffering and ensuring the ethical treatment of animals used in research.
The various mandated and voluntary animal welfare regulations aim to balance these needs by allowing animal research to be conducted under conditions that minimize animal suffering whenever possible. When a study complies with these animal welfare regulations and policies it can be defended as being conducted under conditions that minimized animal pain and distress