What is the threshold number of animals used for a project that typically requires IACUC review?

• A. More than 10 animals
• B. Any use of vertebrate animals
• C. Only if involving endangered species
• D. Projects using over 50 animals

Answer: (B)

The requirement for IACUC review is based on the use of vertebrate animals in research or teaching. This means that any research involving species such as mammals, birds, reptiles, amphibians, and fish would necessitate IACUC oversight, regardless of the number of animals involved. This is due to ethical considerations and the need to ensure humane treatment of animals in scientific research.

The other options imply specific thresholds or conditions that do not encompass the full scope of IACUC requirements. For instance, limiting the threshold to a specific number, such as more than 10 or over 50 animals, does not accurately represent the policy since even one vertebrate animal used in a study requires IACUC review. The mention of endangered species alone also does not cover the broader requirement for all vertebrate animals, making it essential that any project engaging vertebrate species goes through the review process to uphold ethical standards in research.