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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
Just the opposite. Mammals are endothermic, which means warm-blooded: they generate their own body heat. It allows them to move around at night and in the cold, but at the expense of needing far more food to survive.
Exothermic animals, such as lizards and insects, rely on the sun's warmth or the ambient heat to provide the energy they need to be active. The advantage is that they don't need to eat as much; the big disadvantage is that they must slow or shut down as the temperature drops.
It may help to remember that exo- means from outside, while -thermic means having to do with temperature. (Think of the exterior of a house, and its thermostat.) So exothermic literally means getting heat from an outside source, which mammals don't do.
do they eat mouse
Mice themselves are among the very smallest mammals and eat vegetation and some insects. Mice are prey to rats, cats, and raccoons
Does a koala have an exoskeleton or an endoskeleton?
No, koalas are mammals, so have an internal skeleton.
What symbiotic relationship is the cowbirds and other birds?
The relationship is called parasitism because, the cowbird lays it's eggs in the nest of other birds expecting them to hatch and feed it.
In some cases when the host bird rejects the egg the cowbird has been known to return to the nest and destroy it.
Read more: What_is_the_symbiotic_relationship_between_brown_headed_cowbirds_and_other_birdsDo mammals have a low rate orf metabolism?
no, because they are warmblooded (=homeotherm), when animals are tachymetabolism they can slow down their methabolism a littel ebit, like some mice and bears.
At best you have bradymetabolism, then their methabolism can change when they become active, otherwise it is at a low rate
Why can small mammals hear well?
Animals hear high pitched sounds just because of the way their ears are set up. The "hairs" are bigger than the humans and more sensitive. They react when the Frequency is high like a special whistle that a dog can hear.
Why is a human a mammal and a human is not a animal?
Humans have well developed brains capable of abstract reasoning and language.
by Nyam Cyril Munang
bamenda,Cameroon
tel:23776448379
nyamist95@yahoo.co.nz
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Edited by: me.
This is something I always wanted to discuss with the Biologist Mrs. Lamour but never got around to. Sadly, she is no longer with us. A relative of mine saw a photograph of some type of Farm animal ( juvenile) with humanoid features that seemed to resemble a very young Horse of maybe sheep or goat type of animal. This allegedly happened as the result of some disturbed farm hand ( not the origin of Funny Farm) this did happen in the US. After being photographed to prove it was real, the animals- there was a litter of them, were killed and the remains cremated.So, there is no physical evidence, like condemned beef. The fact this happened on a farm makes on think it might have been animals used for food and why the government men took such drastic action > From a description of the photograph the creature was about the size of a very small pony or immature horse or a large dog. Probably did not weight more than l00 lbs. Even if such a creature was viable, it mercifully could not reproduce- Nature has safety valves of the non-return type regarding inter-specific cross breeds and freaks. It is a weird and strangely fascinating concept anyhow. It could and evidentally did, happen, and was suppressed and hushed up. Who would dare eat a half-human hamburger?
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.
