The United States has thousands of animal shelters and rescues, from national organisations and large sanctuaries to municipal shelters and volunteer-run foster networks. Many work to raise adoption rates, expand spay-neuter programmes and reduce the number of animals killed in shelters. Genuine US charities are usually tax-exempt 501(c)(3) non-profits with an Employer Identification Number (EIN), which you can check with the IRS Tax Exempt Organization Search or evaluators such as Charity Navigator before you give. Each US organisation listed on Real Rescues has been checked against its official website and its non-profit registration.