A new study at a Spanish zoo showed the giraffes could do rudimentary mathematics. What animals can do arithmetic?

Researchers found that some animals could “count” carrots in a test—and may have better numerical skills than dogs or horses.

What It Is and How It Affects Learning Dyscalculia is a specific learning disability that affects an individual’s ability to understand and manipulate numbers. Often referred to as ‘math dyslexia,’ ...