0
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.
2,954 Questions
Why do fish produce more eggs than mammals?
It's a survival thing. Many eggs are eaten before they have a chance to hatch. Many are eaten shortly after hatching. The chances are that 9 of 10 won't make it the first week, then even if they do, their chances of survival diminish quickly.
What is the of mammals that koalas and kangaroos belong to?
Koalas and Kangaroos belong to the group of animals known as Marsupials. These mammals are characterized by having special pouches in which they keep their young.
Lack of oxygen to the brain causes an involuntary reaction that we know as a yawn.
Cryptic coloration is a specific type of camouflage used by some species of animals. These animals have external coloration that blends in with their surroundings, such as arctic foxes that have a brown coat in the summer to blend in with the foliage in their environment.
Which mammal have the longest life expectancy?
Some whales have a lifespan similar to humans. Blue whales live over 80 years - Fin whales live about 85 years. The Bowhead whale is the longest living mammal. Some bowhead whales have been found with ivory spears lodged in their flesh from failed attempts by whalers 200 years ago.
The longest living land mammal (after humans) is the elephant which averages 60 - 70 years old. Humans are the longest living mammal on land.
Mammals digest food in several stages. It starts in the mouth with the release of salivary amylase. Food then passes to the stomach. However, there are several different mechanisms for digestion at this point, depending upon the species. Some animals use acid and enzymes released from other organs, while others use bacterial fermentation.
List four characteristics of a vertebrate that is classified as a mammal?
all mammals have a backbone, have lungs and breath air, are warm blooded, they all have a four chambered heart. They also give birth to live young and nurse them.
What are two types of mammals?
Mammals include any of various warmblooded vertebrate animals of the class Mammalia, including humans. They are characterized by a covering of hair on the skin and, in the female, milk-producing mammary glands for nourishing the young.
Some Mammals include:
- Humans
- Primates such as apes, chimpanzees, gorillas
- Dogs and others of the canine family, e.g. wolves
- Cats and other felines, e.g. lions, ligers, panthers
- Cows and other farm stock animals, e.g. buffalo, sheep, pigs, goats
- Horses and other equines such as donkeys and zebras
- Koalas and other marsupials such as kangaroos, koalas, Tasmanian devils, wombats, etc
- Marine mammals, e.g. whales, dolphins, porpoises
- Squirrels and other rodents, such as rats, mice, prairie dogs
- Bears, e.g. black bears, pandas, polar bears
- Monotremes (egg-laying mammals) which include just echidnas and platypuses
- Hippopotamuses
- Rhinoceroses
- Insectivores such as moles, shrews and hedgehogs
- Flying mammals: bats
- Anteaters and armadillos
What is the largest organ of a mammal?
The skin is the largest organ in a dog's body. It has three major layers, the epidermis, the dermis, and subcutis. Other vital parts of the skin include skin appendages, the subcutaneous muscles and fat.
What mammal has the longest nerve cell?
The longest nerve cell in most mammals isthe sensory neuron that convey signals from the part of the body furthest from the head to the medulla.
Among mammals that live on land, the giraffe would have the distinction of having the longest at about 15 feet. But remember that whales are mammals, and while little is known about detailed whale anatomy it is likely that the sensory nerve that transmits sensation from the tail fin of the blue whale to the medulla would be tens of meters long, though it might be difficult to verify this by tracing the pathway of something so small for so far.
What are the two differences in the ways birds and most mammals reproduce and care for their young?
It differs in the way mammals and them birds.
Mammals feed from their breasts.
On the other hand birds go outside the nest to catch like slugs,worms,snails.
Calf is the Word used for the (very) Young of certain animals. A baby of one of those species.
You can't have a calf of a baby. It'll be like having a baby of a baby. Doesn't happen. A baby is a Young, sexually immature living thing. It can't reproduce.
Platypuses reproduce via sexual reproduction.
Platypuses reproduce by laying eggs, which hatch into young platypuses that initially feed off mothers' milk. The platypus is a monotreme, or egg-laying mammal, just like the echidna, and quite unique to Australia. Platypuses lay eggs in a chamber at the end of a burrow dug into a riverbank or next to a creek.
Their young, once hatched, drink milk from grooves on the mother's abdomen where it seeps from glands, rather than attaching to teats.
platypuses are strange in that way,there like mammals becaus thay nurse there young with milk but unlike mammals they lay eggs.
Water. Unless you haven't realized this animals don't have options other than water in the wild. Only humans make artificial drinks. They also drink the nectar of plants.
Do female hyenas dominate the males?
Yes. Hyena communities, called clans, are headed by a female called the matriarch. All the other females in the clan have a distinct role in a hierarchy; just as there is only one matriarch, there is only one female hyena below the matriarch and above all other, and below her is a female hyena subordinate to the hyena beneath the matriarch and above all the others, and so on, until the lowest ranking female is reached-who is still superior to every male in the clan.
The reasons for female dominance are not surprising: female hyenas are larger, stronger, and more aggressive than males.
What is a non-placental mammal?
A mammal is an animal that gives birth to live young and suckles them. A non-mammal is an animal that is born in an egg and does not drink milk from its mother. For example, a bird is a non-mammal because it is born from an egg and does not drink milk. But, there are some exceptions. The duck-billed platypus is one. The platypus is a mammal that suckles its young, but lays eggs!
How are placental mammals classified?
Placental mammals are grouped into Xenartha (anteaters, sloths, and armadillos), Afrotheria (elephant shrews, tenrecs, golden moles, elephants, aardvarks, manatees, dugongs, and hyraxes), Euarchontoglires (rodents, rabbits, hares, pikas, tree shrews, colugos, and primates), and Laurasiatheria (hedgehogs, shrews, moles, solenodons, bats, whales, dolphins, porpoises, even-toed hoofed mammals, odd-toed hoofed mammals, pangolins, and carnivores). Each of these is further divided into orders, which are divided into families, which are divided into genera, which are divided into species. There are 21 orders and 132 families of placental mammals.
