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Mammals
The world is home to 4260 named species of mammals. Mammals, or Mammalia are a class in the Phylum Chordata and the Subphylum Vertebrata. An animal is a mammal if, providing it is female, it can produce milk to feed its young.
500 Questions
What is a small mammal with black stripes across back?
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a pooey baby mixed with save buttons
Whales and dolphins spend all their life in water. Why are they classified as mammals?
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They both make milk for their young (and at some point in their life they have hair).
Why are mammals different from fishes?
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Yes, they are. Fish cannot be removed out of water without dieing, but mammals can be in water and land, and mammals have more organs than fish, but fish are the only ones with a Swim bladder. A Swim Bladder helps the fish find density in water to float and swim.
Are the mammals are uricotelic?
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Ureotelicrefers to an organism that excretes excess nitrogen as urea. Humans can be described as being Ureotelic organisms.An Uricotelicorganism produces uric acid as a result of deamination. An example of such an organisms include birds and insects.
Do seals live in Antarctica all year round?
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All year round. the leopard seal stay within the antarctic regions all year round feeding on penguins, fish and other sea birds.
How can you tell if your potato bug is a boy or girl?
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what is the difference between a boy and a girl potato bug
Is the red fox a vertebrate?
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A red fox has a spine (backbone), so it is a vertebrate.
All mammals, birds, reptiles, amphibians and fish are vertebrates.
Does your dog remember your other dog that died?
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Yes, the dog knows. Of course, the dog may not have the same emotional reaction that you do.
The night when my dog died, and I wrapped him in a blanket and laid him on the front porch overnight. The next morning I found my cat sleeping up next to him. I do believe the cat knew the dog was gone and was mourning over the loss of his friend. I do believe cats and dogs have some sense of loss.
How mammals give birth?
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This process is different in different mammals,in human beings it is as follows
1-The Labor begins:
As labor begins, rhythmic uterine contractions begin weakly and grow progressively stronger. Each contraction shortens the muscle fibers in the uterus, pulling the cervix (uterine opening) wider. In this early stage of labor the cervix dilates (opens) to about 4 cm (1.5 in).
2-Cervical Dialation:
As labor begins, rhythmic uterine contractions begin weakly and grow progressively stronger. Each contraction shortens the muscle fibers in the uterus, pulling the cervix (uterine opening) wider. In this early stage of labor the cervix dilates (opens) to about 4 cm (1.5 in).
3-Descent:
As labor begins, rhythmic uterine contractions begin weakly and grow progressively stronger. Each contraction shortens the muscle fibers in the uterus, pulling the cervix (uterine opening) wider. In this early stage of labor the cervix dilates (opens) to about 4 cm (1.5 in).
4-Crowning:
If a baby's position is head first during delivery, the mother's vagina fits like a crown around the baby's head, making the head visible as it emerges from the birth canal.
5-Birth:
As the head emerges, the neck flexes and the baby rotates to the side. This enables the shoulders to maneuver around the pubic bone. One shoulder emerges, quickly followed by the other shoulder and the rest of the body.
6-Delivery of Placenta:
In the final stage of labor, the uterus continues to contract and the placenta detaches from the uterus and is expelled.
There is a tiny set of mammals that are egg-laying - the duck-billed platypus and one or two others - but viviparous, or placental, reproduction ending in birth at least partly along the lines of the above (according to genus & species) is the system in all other mammals.
Can dogs really remember everything in their lives?
Asked by Wiki User
arguably this could be a veterinary problem for Canines in the K-9 corps of the Army, Marines, and some police units- the causes would be the same-massive trauma or battle shock! I have never heard of this but it is quite logical Shakespeare said: Cry Havoc! and let slip the Dogs of War, he did not tie in Mnemone the Greek Memory goddess, but well, it can happen.
Are mammals the only creatures that have placentas?
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No, they cannot mate. The reason for this is way the fetus develops in each animal is very different. The placental mammal fetus grows and matures within the mother's uterus for the entire pregnancy, obtaining nourishment from the placenta. When the infant is born, it is fully formed and can survive outside the womb. Marsupial fetuses exit their mother's body when they are very tiny and at a primitive stage of development and then make their way up the mother's abdomen and into the pouch (or, in some cases, a mere flap of skin), where they will latch onto the mother's teat for nourishment while they continue to mature and grow until the infant marsupial is able to survive outside the pouch. The teat actually swells in the embryo's mouth, securing it in place.
Marsupials have very different reproductive systems to that of placental mammals. Female marsupials have two vaginas, or what are called paired lateral vaginae. These are for the purpose of transporting the sperm to the womb, but there is a midline pseudovaginal canal for actually giving birth. As well as two vaginas and two uteruses, female marsupials have two fallopian tubes and two cervixes. Most male marsupials, with the exception of the largest species, the Red Kangaroo, Eastern Grey and Western Grey Kangaroos, have a two-pronged penis to accommodate the females' two vaginas.
What is the speed for a wolverine?
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because they are magical ponies that live around ur house.
be aware
Why is it an advantage for animals that migrate long distances to store energy as lipids rather than carbohydrates?
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Fat and glycogen have different chemical properties. Fat contains more energy for mass than sugars. For birds, who need to be very light to remain aerodynamic, storing a vast majority of the energy as fat is much more efficient.
Is it true that only birds and mammals are warm blooded animals?
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Yes. Only birds and mammals are warm-blooded.
What happens to the notochord as a bat develops?
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During the development of most vertebrates, the notochord becomes the nucleus pulpous. In some species, such as the sturgeon and hagfish, the notochord remains even after adulthood is reached.
What organs do mammals have that other animals don't?
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Mammary glands (in adult females), a neocortex (a region of the brain), a corpus callosum (another region of the brain, in placental mammals only), and the malleus and incus middle ear bones.
What mammal has less than four limbs?
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The only mammal species with less than four effective limbs are the sea mammals, like the orca, whale, sea lion, walrus etc. In some of them ther are still clear remnants of what once were hind legs; the orca and whale just have one tiny piece of bone left, so they can be regarded as really having less than four limbs. There are no land mammals with fewer than four limbs.
What is the food of mammals?
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Different mammals eat different food. Mammals occupy varying places on a food chain. Some mammals are vegetarians, they are primary consumers. Some mammals are carnivores, they are higher level consumers. Some mammals are omnivores.
