A tiger walks the same worn groove along the edge of its exhibit, like a broken record. A parrot methodically plucks out its own feathers until bare skin shows through. To a casual visitor, these can ...

Two studies have identified gastrointestinal problems in dogs that licked surfaces excessively or engaged in fly biting behavior. Once the underlying problems were treated, the compulsive behavior in ...

Repetitive behaviors are not an uncommon part of human experience, but not all repetitive actions serve the same purpose or carry the same meaning. Two types of behaviors that are often confused are ...