A case was defined as an unintentional, nonfatal fall injury treated in an ED during 2001-2006 with a record that either included the product code 2001 (animal-induced injury) or had “pet,” “dog,” “cat,” “puppy,” or “kitten” mentioned in the narrative. A total of 7,826 records were identified initially. The narrative for each record was reviewed, and 370 cases were excluded because the fall did not involve a dog or cat, or a pet or pet item was not directly involved in the fall (e.g., “patient jumped off a fence and fell onto a doghouse.”). The type of pet (dog or cat), location, activity, and circumstances at the time of the fall were categorized and coded based on the information in the narrative. For the analyses of dogs and cats separately, 23 cases that involved both cats and dogs were excluded; dog-related injuries were combined when cases involved one or more dogs, and cat-related injuries were combined when cases involved one or more cats.