New research discovers the twisty secret behind the narwhal's unusually straight tusk - CBC

Two brothers named Gary and Shaggy have helped Cornell University researchers make a rare genetic discovery. In a study published in Scientific Reports, scientists reported the first molecular characterization of Marfan syndrome in domestic cats, a condition primarily recognized in humans. Gary and Shaggy first stood out as kittens because of their unusually long limbs. As they grew older, veterinarians also identified abnormalities in their eye structures and an enlarged aorta, the body's main artery. Together, these symptoms suggested Marfan syndrome, an inherited condition that weakens connective tissues throughout the body. The disorder affects approximately 1 in 4,000 people, but these brothers represented the first known documented feline cases.