The Massachusetts Animal Rights Coalition (MARC), is a non-profit volunteer-run animal rights organization based in Massachusetts, United States. MARC is the largest and most active animal rights group in Massachusetts and operates as a tax exempt 501(c)(3) corporation with over 2500 members of all ages and backgrounds MARC targets a broad range of animal rights causes, including animal testing and experimentation, animals in entertainment, veganism, wildlife protection, and the rights of all animals.