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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.
2,954 Questions
How does a baby bat hang on their mother?
Bats hang from ceilings is like a person walking and some people can even walk on their arms. A person legs are stronger than our arms that is just the set up of the body. Just like a bat there legs are the strongest part in their body and sleep downside down comes natural to them.
Are white tailed deer mammals and do they lay eggs or are the babies alive?
White tailed deer are mammals that have live young.
What was the first mammal on earth?
Haramiyavia clemmenseni It was named after geologist, Lars Clemmensen who dated the fossiles to 212 mio (late Triassic). It represents the the earliest known haramiyid, an early offspring of the multituberculates - a sister group to therian (or modern) mammals (one theory), or a group of early mammals unrelated to multituberculates (another theory). The find in Eastern Greenland, 1997 was a sensation because it represented the first haramiyid with fully preserved teeth and jaws and other body parts. These showed that the two other haramiyid genums: Haramiya and Thomasia where in fact one animal in that the teeth from these findings represented respectively the lower and upper teeth of the same animal. It also safely placed the haramiyids under the mammals because it's teeth were very mammal-like. Haramiyavia was small, agile, and it's cranium was 4 cm. It had four specialized point-crushing incisors similar to those in rodents and very complex premolars and molars designed for crushing hard food. It was a herbivore and probably seed eating. The extinction of egg-laying haramiyids and multituberculata was probably among other factors due to the competition of the placental true rodents who first appeared 40 mio years ago. With the fetus raised in the placenta of the rodents it developed much faster and the rodents therefore became more succesfull. Sources: Thomas Stainforth Kemp: The origin and evolution of mammals - 2005 - Science www.nationalgeographic.com
Why are giraffes and whales mammals?
Giraffes are classed as mammals. They are not related to retiles in any way.
They are classed as mammals because they are vertebrates (They have a backbone, or spine), they are endothermic (this is sometimes called "warm blooded", and basically means they regulate their own boy temperature by using internal mechanisms, like sweating and panting), they have hair on their bodies, and they produce milk to feed their young, as well as giving birth to live young.
Reptiles on the other hand are completely different. They are Ectotherm (this is what's known as "cold blooded" and means they use external means, such as basking the sun to warm up, or hiding in the shade to cool down), they have scales instead of hair, and they lay eggs instead of giving birth to live young, and do not produce milk for them, as hatchlings do not need it.
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.
