The National Anti-Vivisection Society (EIN: 36-2229588) is a nonprofit organization dedicated to ending the exploitation of animals used in science, focusing on the cause areas of science and domesticated animals. With an operating budget of $3.1 million and total revenue of $4.6 million for the filing year 2025, the organization does not rely on a single funder for 50% or more of its revenue. More information can be found on their website at www.navs.org.