The killer whale is a kind of whale, and the dolphin is also a kind of whale. Whales here refer to cetaceans, and killer whales and dolphins belong to cetaceans. In terms of families and genera, orcas belong to the Dolphinidae and Orcas; Although dolphins are also dolphins, they are not orcas. Therefore, it can be seen that killer whales are not dolphins. In fact, the difference between dolphins and killer whales is quite large. For example, there is a big difference in body size, and killer whales are much larger than dolphins. Moreover, in terms of predation relationships, killer whales are at the top of the food chain, not only hunting very large creatures such as great white sharks, but sometimes even dolphins as their own food.
The killer whale is a kind of whale, a large toothed whale. They are not fish, but a mammalian animal, that is, mammals. In fact, all whales are not fish, they are mammals, can not be confused with whales and fish.
As a mammal, the killer whale has some characteristics that are consistent with all mammals. Killer whales, for example, also need lungs to breathe, which is very different from the way fish breathe with gills. It needs to be out of the water when breathing, so it needs to be out of the water regularly, not in the water all the time. Moreover, their reproductive methods are the same as mammals, using viviparous methods to reproduce, unlike fish, which use oviparous methods to reproduce offspring. After the birth of the baby killer whale, it will also go through a period of lactation. During the lactation period, the growth rate of small killer whales is relatively fast.
