Home / Animals in Research / Rodents Gallery Square Tunnel Location: Seattle, Washington Group: Rodents Species: Mouse Research Areas: Cancer Tunnels allow mice to carry out natural behaviors like hiding and climbing. Some tunnels are square, making it easier for mice to climb and rest on top of the tunnel. Share this story: Animals in Research Exploring How the Brain Works The brain controls everything from movement and memory to emotions and decision-making, but there is still much we don't understand about how… Animals in Research Mice and Multiple Sclerosis Research Multiple sclerosis (MS) occurs when the immune system attacks myelin, the protective covering around nerve fibers in the brain and spinal cord.… Animals in Research Understanding the Brain and Behavior Understanding mental health starts with understanding the brain. Research with rats has helped scientists investigate how brain circuits, chemicals and life experiences… Animals in Research Cozy in a Nest This research mouse is curled up asleep in a nest. Nest building is a natural and important behavior for mice. Given appropriate… View More Rodents