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How Come Mammals Are The Only Animals That Produce Milk?

Discussion in 'Lifesize Mammals' started by tech bud, Sep 12, 2019.

  1. tech bud

    tech bud New Member

    it is part of the huge risks mammals take on with live birth. All the animals you listed don't really take care of their young with the exception of birds and some species of the others. The reason for this is because it doesn't take much energy to develop and lay eggs so you can produce a lot of eggs and just lay them forget about them and hope some of your offspring make it but if not hey you got another mating season. https://scrabblewordfinder.vip/ https://www.applock.ooo/ https://www.7zip.vip/

    Live birth is different, you have to carry your baby to term and have it develop which is a huge investment in resources and time and could potentially put you in danger by affecting your running performance, hunting performance etc. and if you fail in raising your young or making it to term with the pregnancy you must wait for the next mating season and wait for the process of developing young all over again. So a way to help guarantee that your young will grow up is to give them milk, a super energy dense liquid to help your young get the energy it needs and hopefully survive since you already spent all this time investing in your young you should invest some more so it didn't go to waste.

    Also just compare the number of young produced and you will see why live birth is risky. The biggest litters are produced by the simplest mammals with the biggest being from tailless tenrecs with an average of 15. That's pretty average for reptiles and amphibians usually lay hundreds of eggs.
    Last edited: Sep 15, 2019
  2. joeym

    joeym Jeannette & Joey @ Dunn's Falls

    Answer to your only relevant question: Mammals produce milk because they have mammary glands.
    LordRusty, rogerswildlife and George like this.

  3. HondaXR250

    HondaXR250 Active Member

    You ever raise animals that lay eggs? Or walk up on an animal laying on her nest of eggs? They are far from forgetting about them...
    msestak likes this.
  4. Lance.G

    Lance.G Active Member

    God made it so.
    msestak, rogerswildlife and joeym like this.
  5. Rausch

    Rausch Well-Known Member

    The bigger picture here is that they’re classified as mammals because they produce milk. That encompasses all different kinds of animals lumped into one group with a common trait. That’s like asking why do only birds have feathers?
    msestak and Chippers like this.
  6. joeym

    joeym Jeannette & Joey @ Dunn's Falls

    Milk production is another miraculous part of anatomy. I took a course in Lactation when I was an undergraduate in Dairy Science about 45 years ago.
    msestak likes this.
  7. George

    George The older I get, the better I was.

    Joey, I grew up as a farm kid and many of the things even adults find shocking and intriguing, no longer surprises me. Milk is the lifeblood of survival to all warm blooded creatures, including ourselves. Still I hear "kids" being surprised as to how milk gets on to grocery shelves. I wonder how many people know that a cow simply doesn't produce milk her entire life and the rigors involved in dairy farms maintaining production. It's truly sad that there are so many "educated" people out there without a friggin clue.
    msestak, rogerswildlife and joeym like this.
  8. mislynx

    mislynx Member

    Because Mammal Evolution works very well!
    LordRusty likes this.
  9. Tanglewood Taxidermy

    Tanglewood Taxidermy Well-Known Member

    Just like college students who think meat is manufactured at the grocery store.
    msestak likes this.
  10. Sea Wolf

    Sea Wolf Well-Known Member

    msestak likes this.
  11. aussiesam

    aussiesam I'm an Australian.

    And then you have an echidna and platypus who lay eggs and produces milk.....
    msestak and HondaXR250 like this.
  12. Dave York

    Dave York Well-Known Member

  13. msestak

    msestak Well-Known Member

    Erie, PA
    Almonds produce milk..soybeans too :)

    HondaXR250 and Micah Howards like this.
  14. HondaXR250

    HondaXR250 Active Member

    Richard C, Chippers and msestak like this.
  15. byrdman

    byrdman Well-Known Member

    And the platypus lays eggs but is a mammal.... and pigeons
    feed milk to young and they are birds... sharks live birth but dont feed milk... turtles lay eggs but dont set on them.... hornbills lay eggs then seal off the nest hole and set on eggs until they hatch.... cowbirds lay eggs in other birds nests so dont raise any of thier own young....."Mammary" glands ....
    msestak likes this.
  16. joeym

    joeym Jeannette & Joey @ Dunn's Falls

    Definition of mammal. : any of a class (Mammalia) of warm-blooded higher vertebrates (such as placentals, marsupials, or monotremes) that nourish their young with milk secreted by mammary glands, have the skin usually more or less covered with hair, and include humans.
    msestak likes this.