How many apes get tested every year?

The exact number of apes tested each year can vary widely depending on regulations, research needs, and the specific practices of laboratories and institutions. However, estimates suggest that thousands of non-human primates, including apes, are used in research annually, with many countries implementing strict guidelines to reduce and refine their use. It's important to note that ethical considerations and public sentiment have led to a decline in the use of apes in research in recent years.