Killer whale Killer whale The killer whale or orca ("Orcinus orca") is a toothed whale belonging to the oceanic dolphin family, of which it is the largest member. Killer whales have a diverse diet, although individual populations often specialize in particular types of prey. Some feed exclusively on fish, while others hunt marine mammals such as seals and other species of dolphin. They have been known to attack baleen whale calves, and even adult whales. Killer whales are apex predators, as no animal preys on them. A cosmopolitan species, they can be found in each of the world's oceans in a variety
Greater white-toothed shrew and other small carnivorous mammals such as weasels are the main predators of "C. russula". In order to avoid predation, the greater white-toothed shrews can be found undercover of vegetation or leaf litter when active. Cryptic coloration is also used as an effective method to avoid predation. The greater white-toothed shrews are classified as semi-social mammals. During winter, "C. russula" are found sharing nests and enter torpor. Mated pairs are found guarding their territories together. "C. russula" are highly monogamous and exhibit a female-biased dispersal, which is highly uncommon in mammals. This dispersal pattern can also occur due to infiltration