On April 4, 2014, in a Notice of Agency Decision, NIH announced its new requirement regarding the minimum floor space required for each of the remaining chimpanzees in NIH-supported research (see Summer 2013 AWI Quarterly). NIH’s Council of Councils Working Group on the Use of Chimpanzees in NIH-Supported Research (Working Group) had originally recommended 1,000 ft2 per chimpanzee. This recommendation, however, was rejected.