Zoology

A:

Sperm whales are dedicated carnivores, whose diet is essentially comprised of all meat from various oceanic animals. Around 80 percent of the sperm whale's diet is made up of giant squid, with the remaining 20 percent an eclectic mix of fish, crustaceans and sharks. While the sperm whale's diet can be established with some certainty by examining its stomach contents, the animal hunts at extreme depths and as such (as of 2014), its encounters with giant squid have never been directly observed.

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  • What is a postanal tail?

    Q: What is a postanal tail?

    A: A postanal tail is an extension of the spinal chord that extends beyond the animal's anus. Postanal tails are a feature of all chordates, which is a phylum that includes vertebrates. All chordates have a postanal tail at some point, but they may not have that tail for their entire lives.
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  • What are some examples of echinodermata?

    Q: What are some examples of echinodermata?

    A: The sand dollar, sea urchin, brittle star, sea star and sea cucumber are some examples of echinodermata. This family of marine animals lives on the sea floor and is distributed widely from intertidal areas to the darkest depths of the ocean.
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  • When did birds first appear on Earth?

    Q: When did birds first appear on Earth?

    A: According to a 2013 Discovery News article, researchers at Italy's Museo Geologico Giovanni Capellini analyzed a bird fossil that existed in China 160 million years ago. The dinosaur, named Aurornis xui, is thought to have been a small feathered animal with teeth, claws and a long tail.
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  • What do rhinoceroses eat?

    Q: What do rhinoceroses eat?

    A: Rhinoceroses eat as many as 220 different species of grasses, herbs and woody plants as part of their regular diet. Black rhinos eat mostly trees and bushes, while white rhinos graze on grasses lower to the ground.
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  • How do insects breathe?

    Q: How do insects breathe?

    A: Insects breathe through spiracles on the outside of their exoskeletons, which link to a network of oxygen-delivering tracheal tubes. These tubes end in liquid-filled tracheoles where oxygen dissolves before diffusing to the cytoplasm of adjoining cells.
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  • What animals have no eyes?

    Q: What animals have no eyes?

    A: Brainz reports the existence of at least 10 animals that are born without eyes, including the Kauai cave wolf spider, southern cave crayfish, Mexican tetra, blind legless lizard, Texas blind salamander, widemouth blindcat and fresh water hydra. Other animals born without eyes are the blind albino cave crab, Brazilian blind characid and the olm. Many of these animals live in environments with very little or no light.
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  • What is the difference between genus and species?

    Q: What is the difference between genus and species?

    A: Genus and species are part of the biological classification system for living things. A genus encompasses a group of species that are closely related. Species is the most specific level of scientific classification, which typically groups animals that are so similar that, when they breed, they produce fertile offspring.
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  • What animal has three hearts?

    Q: What animal has three hearts?

    A: According to About.com, the octopus has three hearts, two of which pump blood through the gills of the octopus and another that pumps blood throughout the rest of the body. Octopuses belong to the phylum Mollusca and the class Cephalopoda, which includes squids, cuttlefish and nautiluses.
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  • What do rhinos eat?

    Q: What do rhinos eat?

    A: Rhinoceroses are herbivorous mammals, meaning they do not consume meat but subsist on plant matter only. They tend to eat whatever vegetation is available to them, and rhinos have adapted specific features to enable this kind of diet.
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  • What is the function of the anther?

    Q: What is the function of the anther?

    A: The function of the anther is to produce and bear the pollen of the flower. This structure sits atop a structure called a filament, and together these two structure constitute the flower's stamen. This is one of a typical flower's two main sexual organs, the other being the pistil, which contains the plant's ovaries.
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  • What animal weighs a ton?

    Q: What animal weighs a ton?

    A: There are a number of creatures in the animal kingdom that can weigh a ton or more, including the southern elephant seal, the blue whale and the hippopotamus. According to About.com, the white rhinoceros and the African elephant also typically weigh at least a ton.
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  • Where do houseflies go during the winter?

    Q: Where do houseflies go during the winter?

    A: Because houseflies only live a maximum of 2 months, most die by the time winter weather rolls around. Some flies in the pupal stage survive through the winter.
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  • Do fish need oxygen?

    Q: Do fish need oxygen?

    A: Fish need oxygen, but since they do not have lungs they get their oxygen from the water they live in. The oxygen in the water that fishes use is called dissolved oxygen, since the oxygen is dissolved in water.
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  • Which animal makes the loudest sound?

    Q: Which animal makes the loudest sound?

    A: The sound of the blue whale, which measures 188 decibels and travels up to 500 miles, is the loudest among all animals, according to the Smithsonian National Zoological Park. On land, the loudest animal sound comes from the howler monkey and can be heard for up to 3 miles.
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  • Where do koalas come from?

    Q: Where do koalas come from?

    A: Koalas are native to the coastal regions of eastern and southeastern Australia. They can be found in the Australian states of Queensland, South Australia, New South Wales and Victoria.
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  • What animal has the shortest lifespan?

    Q: What animal has the shortest lifespan?

    A: If lifespan is defined as the entire lifetime of an animal from birth until death, then the record for shortest average lifespan belongs to a group of microscopic worm-like animals called gastrotrichs.
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  • How do animals react to weather changes?

    Q: How do animals react to weather changes?

    A: Animals try to avoid turbulent weather changes out of an instinct for survival. Many animals try to escape the cold to remain warm. Other animals change their diets when the weather changes. For instance, the red fox eats fruits and insects during warmer seasons, but preys on rodents during the winter when those items are not in abundance.
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  • What are the members of the kingdom Protista?

    Q: What are the members of the kingdom Protista?

    A: Kingdom Protista includes mostly unicellular, eukaryotic life forms that behave similar to animals, plants and fungi based upon how the organisms obtain nutrition from their environment. These creatures do not fit into other kingdoms of life, mostly live in water and have a nucleus in their cells.
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  • Why are lions called the king of the jungle?

    Q: Why are lions called the king of the jungle?

    A: Lions are considered to be the king of the jungle due to their size, strength and numbers and because they don't fear any other animal. This can be somewhat misleading since lions don't actually live in jungles.
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  • Why do animals need energy?

    Q: Why do animals need energy?

    A: Animals need energy to carry out all the body processes required to maintain life. Without energy, an animal is unable to move, to digest its food, to reproduce, to grow or even to breathe.
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  • What are some animals with more than one heart?

    Q: What are some animals with more than one heart?

    A: Many cephalopods (including squids and octopuses) have three hearts, while earthworms have five hearts and hagfish have four. An operation exists in which a surgeon can put an additional heart into a human that can supplement the original.
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