giraffe: tallest living quadruped; having a spotted coat and small horns and very long neck and legs; of savannahs of tropical Africa
even-toed ungulate: placental mammal having hooves with an even number of functional toes on each foot
alzheimer's disease: a progressive form of presenile dementia that is similar to senile dementia except that it usually starts in the 40s or 50s; first symptoms are impaired memory which is followed by impaired thought and speech and finally complete helplessness