No other member of the animal kingdom can ace an algebra test or write an A+ essay. But that doesn’t mean other species aren’t highly intelligent. Several members of the animal kingdom have impress cognitive chops and cerebral skills.
Humans are the only animals known to develop Alzheimer’s disease, an age-related brain disorder that causes impaired cognitive functioning and other behavioral problems. Or at least, that’s what we thought. For the first time ever, researchers are claiming to have found signs of the disease in the brains of elderly chimps—a discovery that could yield new insights into the dreaded disorder.