Are dolphins considered mammals???

Question

And what is the correct deffinition of mammals????

Please answer both questions if you can.

Answer 1

http://encarta.msn.com/encyclopedia_7615...

http://en.wikipedia.org/wiki/Mammal

Answer 2

mammals are a class of animals whose bodies mostly are covered with hair/fur, the feed their young with milk (like body milk, breast milk, etc.) and they give birth to live young (there are some exceptions to the live birth thing)

so yeah dolphins do those things... including the hari (they have a very fine coat that you can't really see) so yeah they are mammals =)

Answer 3

yes they are considered mammals

and mammals are living things that give birth to live young and nurse thieryoung with milk they produce

Answer 4

Yes they are Missy, N' they warm blooded, 2

I Luvv Dolphins-- (`^\/^`)-->

~Indie~

~JesusSavezJohn3;16~

Answer 5

Dolphins are considered mammals because they are warm blooded, drink milk from their mothers' when they are babies, and breath air. the "correct" definition of mammals is: any vertebrate of the class Mammalia, having the body more or less covered with hair, nourishing the young with milk from the mammary glands, and, with the exception of the egg-laying monotremes, giving birth to live young.  Good luck with the answer!

Answer 6

yes dolphins are mammals

Mammals are a class of vertebrate animals characterized by the presence of sweat glands, including sweat glands modified for milk production, hair, three middle ear bones used in hearing, and a neocortex region in the brain.

All mammals (except for the six species of monotremes) give birth to live young instead of laying eggs. Most mammals also possess specialized teeth, and the largest group of mammals, the placentals, use a placenta during gestation. The mammalian brain regulates endothermic and circulatory systems, including a four-chambered heart.

Mammals encompass approximately 5,400 species, ranging in size from the Bumblebee Bat (30-40mm) to the Blue Whale (33 m), distributed in about 1,200 genera, 153 families, and 29 orders,[1] though this varies by classification scheme.

Most mammals belong to the placental group. The four largest orders within the placental mammals are Rodentia (mice, rats, and other small, gnawing mammals), Chiroptera (bats), Carnivora (dogs, cats, bears, and other mammals that primarily eat meat), and Cetartiodactyla (including numerous herbivore species, such as deer, sheep, goats, and buffalos, plus whales). The human species is also a placental mammal, a member of the order Primates.

Answer 7

yes they are mammals and like man they give birth to 1 live calf at a time

definition of a mammal....Any of various warm-blooded vertebrate animals of the class Mammalia, including humans, characterized by a covering of hair on the skin and, in the female, milk-producing mammary glands for nourishing the young.

Answer 8

the ONLY DEFINING features..

are hair

and mammary glands

live birth and ovipariousness also belong to other groups of classes.. as such cannot be included in a definition..

not sweat glands.. dogs don't sweat yet are mammals

not endothermy.. birds and certain fish are also endothermic

not vivariousness.. certain fish and reptiles give live birth as well

ONLY mammary glands and fur.... even whales and dolphins have eyelashes and facial hair

Answer 9

dolphins are known as marine mammals

definition  can be ‘warm-blooded vertebrate animals belonging to the class mammalia

Answer 10

http://en.wikipedia.org/wiki/Mammal

Answer 11

Dolphins are mammals

Answer 12

Yes

http://en.wikipedia.org/wiki/Mammal

Answer 13

they are, if an animal has hair, and has a live birth, with the exception of the platupus, it is considered a mammal.

hope i helped

Answer 14

yes they are mammals.

mammals born babies

other born eggs

(dolphins and orca are mammals .... be careful of their tail

it is not vertical. it is horizontal cause it was supposed to be feet!!!!!! )

look at dolphin

http://www.spawar.navy.mil/sandiego/tech...

vs other fish

http://www.smh.com.au/ffxImage/urlpictur...

Answer 15

yes dolphins are mammals, and a mammal is a living object that gives birth, and not eggs. for instance, we are mammals and snaked arent.

Answer 16

Yes.

Warm-blooded, have live offspring (not eggs).

Answer 17

Yes, they are air breathing, warm blooded mammal brothers.

Oh, and Platypus have eggs, so be careful with putting all your eggs in a non-mammal basket.

Answer 18

Yes they are mammals.... they give birth to live young (although a few mammals do not) they breath air, have body hair, have 3 middle ear bones, are also warm blooded and nourish their young with milk, and have glands (mammary and sweat)

Answer 19

Yes.  They have live offspring (eggs & sperm) and they are warm blooded.  Mammals can live in-water or out-of-water

Answer 20

Dolphins are marine mammals that are closely related to whales and porpoises.

Answer 21

Yes.

A mammal is any warm blooded animal that gives live birth and is covered in hair.

I think there are only two exceptions to this rule, one being the duck-billed platypus.

Answer 22

Yes they are, because to be considered a mammal..a creature needs to be both warm-blooded (unlike snakes/lizzards, etc..that need to sun themselves to keep their body temperatures up) breathe air via their lungs, and they need to give birth to live young (no hatching from eggs). Also, mammals also nurse their young.

Answer 23

Scientists of years past have done fairly well to classify organisms as best they can. There are 5 main kingdoms that all living things fall under:

Kingdom Monera- these are things like bacteria

Kingdom Protista- these are amoebas and paramecium

Kingdom Fungi- these are the mushrooms and molds

Kingdom Plantae- these are plants from moss to trees!

Kingdom Animalia- these are fish, amphibians, worms,

mammals, insects, arachnids, jellyfish, etc etc.

*Theres some debate whether a 6th should be added to the Kingdom list (this basically splits the Kingdom Monera into two.)

Anyways, so you have the Kingdom Animalia. To break this down quickly and simply, the Kingdom is split into groups... vertebrae (with a spinal cord/backbone) and invertebrates (no backbone).

Ok, so vertebrates (w/ backbone) are basically your fish, birds, reptiles, amphibians and your mammals. Animals with backbones are put into one of these categories. So where do we put your dolphin?! It has similar structures like a fish, but it doesnt have gills.

So what does it mean to be a mammal? They must follow these guidelines:

*Mammals (female) have mammary glands to produce milk for young (they also have other glands-like sweat glands)

*Mammals have hair (some all over the body, some temporary)

*Mammals give live birth to young (no eggs-except a few bizzare mammals like the platypus)

*Mammals are warm blooded (they regulate their own body temperature)

***There are other things that can define whether an animal is a mammal or not, like the structure of the heart and jawbone)

Ok so lets check the dolphin.

-Dolphins produce milk for their young. Check!

-Dolphins have hair when they're born (sparse little hairs here and there) Check!

-Dolphins give birth to live young. No eggs here! Check!

-Dolphins are warm blooded. Definitely! Check!

---and as for those other regulations I was talking about with the heart and jaw structure... trust me, thats another check! :)

So while the dolphin looks similar to a fish, its a mammal! Think of dolphins and whales as being specially modified for the water!

So I hope I answered both your questions! Theres SO many interesting things to learn about in the study of biology and especially in the classification system! I didnt go through the entire classification system...and this answer was basically a crash course in this area... but hopefully youll find out a lot more! :)

Answer 24

Yes. They are warm-blooded, vertebrates (have backbones), breath air, lactate (feed milk to their young). They even have hair! (around their lips).

Answer 25

Yes, they are mammals because they are endothermic.

Answer 26

yes

a class of animals that have backbones, are warm-blooded, breath air, and whose females have milk-secreting glands for feeding their young.

Answer 27

yeah.

and mammals  are a class of vertebrate animals characterized by the presence of sweat glands, including sweat glands modified for milk production, hair, three middle ear bones used in hearing, and a neocortex region in the brain.All mammals (except for the six species of monotremes) give birth to live young instead of laying eggs. Most mammals also possess specialized teeth, and the largest group of mammals, the placentals, use a placenta during gestation.

Answer 28

Yes they are....

Answer 29

Mammals are warm blooded animals that give live birth and nurse their young.

http://education.yahoo.com/reference/dic...

Mammal:

Any of various warm-blooded vertebrate animals of the class Mammalia, including humans, characterized by a covering of hair on the skin and, in the female, milk-producing mammary glands for nourishing the young.

Note that biology is the science of exceptions (as a college bio professor used to say to us). Dolphins have no hair, but they are mammals. Duckbill Platypus lays eggs, but is a mammal. So many true mammals don't fit the description perfectly.

Answer 30

yes, dolphins and whales are the 2 mammals in the ocean.

Mammal: a class of animals that have backbones, are warm-blooded, breath air, and whose females have milk-secreting glands for feeding their young

Answer 31

Yes, dolphins are mammals because they give live birth.  

  Mammals: Warm blooded vertebrate animals, covered in hair over their skin.