The National Institute of Environmental Health Sciences awarded a purchase order to Noldus Information Technology, Inc. for a Noldus CatWalk XT Gait Analysis System on September 23, 2026, with a firm fixed price of $35,525.00 under total small business set-aside. Place of performance is Leesburg, Virginia. The system supports preclinical research on rodent models of neurological, neuromuscular, and musculoskeletal disorders through non-invasive, quantitative gait assessment. The CatWalk XT provides voluntary locomotion assessment via a transparent glass walkway with internally reflected illumination and high-speed digital camera capture at minimum 100 frames per second, automated extraction of a minimum of 50 spatial and temporal gait parameters, automatic paw print classification, and proprietary gait analysis software with statistical analysis and graphical visualization capabilities. The order is due for ultimate completion by September 22, 2027.