Clinical Aspects of Huntington's Disease -- The Neuropathology of Huntington's Disease -- Neurobiology of Huntington's Disease -- Mouse Models of Huntington's Disease -- Transgenic Rat Models of Huntington's Disease -- Large Animal Models of Huntington's Disease -- Therapeutic Strategies for Huntington's Disease -- Clinical and Pathological Features of Parkinson's Disease -- Symptomatic Models of Parkinson's Disease and L-DOPA-Induced Dyskinesia in Non-human Primates -- Neuroinflammation in Parkinson's Disease Animal Models: A Cell Stress Response or a Step in Neurodegeneration? -- Viral Vector-Based Models of Parkinson's Disease -- Transgenic Rodent Models to Study Alpha-Synuclein Pathogenesis, with a Focus on Cognitive Deficits -- Modeling LRRK2 Pathobiology in Parkinson's Disease: From Yeast to Rodents -- Models of Multiple System Atrophy.