Gergely et al. investigated dogs behaviour tovard “unidentified moving objects” (UMO’s) with an A not B error paradigm. They hypothesized that if a UMO interacted socially with a dog, the UMO would become associated with certain social cues and would subsequently affect dog behaviour. They found that dogs in the Human and Social UMO conditions were more likely to search for the ball behind the A screen during B trials than dogs in the Non-Social UMO condition. These results reveal that the unfamiliar partner’s social responsiveness leads rapidly to accepting information communicated by the partner.