False Killer whales are an infrequently observed species around the islands of Madeira. The appearance is unpredictable but more common during the spring and fall seasons. They are usually seen in groups of 7-12 individuals. These groups are believed to be family groups that share dialects, traditions and cooperative feeding. They are known to associate with other species of cetaceans, especially Bottlenose dolphins. But they are also know for attacking smaller species of dolphins and larger whales.