what are the differences between dolphins and porpoises?
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Dolphins tend to have prominent, elongated “beaks” and cone-shaped teeth, while porpoises have smaller mouths and spade-shaped teeth. The dolphin's hooked or curved dorsal fin (the one in the middle of the animal's back) also differs from the porpoise's triangular dorsal fin.
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Apes do not have tails, while most monkey species do. Apes tend to be larger than monkeys and usually have larger brains. Apes also tend to live longer than monkeys. Monkeys tend to have similar skeletal structures like that of smaller, four-legged mammals, such as cats and dogs.
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Porpoises are a group of fully aquatic marine mammals, similar in appearance to a dolphin, all of which are classified under the family Phocoenidae, parvorder Odontoceti (toothed whales).
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Hedgehogs have about 5,000 spines, whereas porcupines have about 30,000. Perhaps the most noticed difference between hedgehogs and porcupines is how they use their quills to defend themselves. Hedgehogs will roll into a ball and erect their spines so that no part of their soft body is showing.
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Dolphins are a type of consumer called a carnivore because they eat only meat. Dolphins are part of an ocean food chain. ... In a typical food chain, the producers are at the bottom and the consumers are at the top. An important part of all food chains are the dead plants and animals or decomposers.
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Most everyone is aware of at least some of the differences between birds and mammals. Whereas birds have feathers, lack teeth and lay eggs, mammals have fur or hair for insulation, possess teeth and give birth to live young.
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Finless porpoises need an abundant food supply for survival. The destruction of the Baiji dolphin food supply was central to its extinction. Overfishing is the main factor that contributes to the decrease in finless porpoises' food supply, but pollution and ship movement are factors as well.
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Sea lions have a longer nose with their eyes set futher back in their heads while Fur seals have a shorter nose with the eyes closer to the nose. The ear flaps on Fur seals are larger and sticking father out from the head then Sea lions, and their flipper are proportionally longer on Fur seals then Sea lions.
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Porcupines have longer quills than hedgehogs. Some species have 2-3 inch quills while an African species has quills almost a foot long. Porcupine quills easily fall off. Hedgehogs have about 5,000 spines, whereas porcupines have about 30,000.
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Most whales belong to the group of toothed whales such as all dolphins and porpoises.
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Whales, along with dolphins and porpoises, are warm-blooded mammals and breathe air like humans do. There are some significant differences between whales and fish: Whales are warm blooded. Fish are cold blooded.
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The short answer is: Yes, dolphins are a type of whale. ... Most whales belong to the group of toothed whales such as all dolphins and porpoises. The main differences between those two groups are, as their names indicate, that toothed whales have teeth whereas baleen whales have baleen plates in their mouth.
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The Difference Between a Gopher and Mole Gophers are medium-sized rodents with fur-lined pouches outside of their mouths. ... Moles are about 6-8 inches long with pointed snouts, paddle-like forefeet and long claws. Their feet are used to help them dig through the soil.
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The main difference between them is that baleen whales have baleen and two blow holes while toothed whales have teeth and one blow hole. Dolphins are toothed whales and the largest dolphin is the Orca (generally mistaken for a whale due to its name killer whale). A related family to dolphins are Porpoises.
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Why are dolphins so smart? Dolphins live in complex social groups and have evolved to have highly-developed brains. These factors are the largest contributors to their intelligence. Dolphins have relatively large and complex brains that developed over thousands of generations.
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First thing's first: all dolphins are whales, but not all whales are dolphins. ... It may sound confusing, but all dolphins are simply smaller types of whales. The whale order (Cetacea) is divided into several different families, one of them being Delphinidae (this includes all oceanic dolphin species).
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While there can be considerable variation between species, the main external differences between male and female cetaceans are that females have MAMMARY SLITS which flank each side of the genital slit AND females have a long external genital slit in which both the vagina and anus are located while males have separate ...