I live with several cocker spaniels. They are smart and affectionate, but sometimes air-headed, impulsive and extremely sensitive. It's common for friends to describe my dogs as "having ADHD " as one of my canine whirlwinds whizz past. People are increasingly aware of neurodiversity , and diagnoses such as autism and ADHD ( attention deficit hyperactivity disorder ) are becoming more common. And scientists are starting to give their attention to the idea that some of our animal cousins may also