5 Animals That Sleep Too Much (and One That Might Not Need To)

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In the animal kingdom, sleeping can be dangerous. Lying completely motionless and unconscious for hours at a time is just asking for trouble. There are, however, some sleepy risk-takers who spend almost all of their days snoozing.
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Brown Bat:
Human infants:
Nine-banded Armadillo:
www.researchgate.net/publication/241038063_Life_on_the_Half-Shell_Consequences_of_a_Carapace_in_the_Evolution_of_Armadillos_Xenarthra_Cingulata [PDF]
Fruit flies:


  1. SciShow


    28 dias atrás

    SciShow is supported by Brilliant.org. Go to Brilliant.org/SciShow to get 20% off of an annual Premium subscription.

    • brady alex

      brady alex

      27 dias atrás

      +nikon12x42 vaxxed www.minds.com/media/689645788778733587

    • nikon12x42


      28 dias atrás

      vaccines cause death and disability hank green is a child abiuser who lies for vaccines, denyting damage. his whole family look liek transvestites.

    • brady alex

      brady alex

      28 dias atrás

      sloths may sleep a lot

    • hereticpariah 6/66

      hereticpariah 6/66

      28 dias atrás

      Lotta people asking.... *_WHERE ARE THE SLOTHS?!??_* ...thought you should know....

  2. Ashish Singh

    Ashish Singh

    7 horas atrás

    1:00 longest sleeping mammal ... some bat which sleeps only 19.7 hours Me: * skips a day sleeping * am I a joke to you ?

  3. acegeek


    6 dias atrás

    How did I live this long without knowing there are different kinds of armadillos!?

  4. Andrei Yang

    Andrei Yang

    10 dias atrás

    Angered I'm not on this list. I sleep too much. Also, TIL I'm (still) an altricial animal.

  5. Sarah Herbison

    Sarah Herbison

    12 dias atrás

    I wonder if the big brown bat was in the Neverending Story

  6. Morticia Adams

    Morticia Adams

    12 dias atrás

    Since suffering a brain abscess I've needed at least 9-11 hours of sleep a day (sometimes with naps on top of that) if I want to function. On another note, I'm surprised pandas don't make this list since they don't get much nutrition from their food like koalas. Pandas mainly sleep, find food, eat and poop.

  7. Dee B

    Dee B

    14 dias atrás

    Some animals take sleep to the extreme. Me: *grins*

  8. John Smith

    John Smith

    14 dias atrás

    Animals sleep as long as they can because sleeping is better than living.

  9. Sophie Chipman

    Sophie Chipman

    17 dias atrás

    on the video it says 6 animals but the title says 5 animals

  10. Wiame ENA

    Wiame ENA

    22 dias atrás

    Where are sloths?!

  11. JosueCardona18


    22 dias atrás

    I once slept for 20 hours and fell asleep an hour later

  12. David T

    David T

    24 dias atrás

    Human babies may sleep for 16 hours a day, but they don't sleep at all at night. Just ask a new parent.

  13. Abeba Shura

    Abeba Shura

    25 dias atrás

    Free. FAC did wemn saxx

    • Abeba Shura

      Abeba Shura

      25 dias atrás

      Fac dog wemn sax

  14. Rebekah


    25 dias atrás

    I have a strict 12 up 12 down schedule

  15. addi art

    addi art

    26 dias atrás

    You missed one it was a headge hog they sleep for almost 12 hours!

  16. Victoria


    26 dias atrás

    I thought humans died or went crazy if they stopped sleeping.

  17. thorium222


    26 dias atrás

    I slept 11 hours this night, the usual length of my sleep cycle when undisturbed and then I lay down for a 2 hour afternoon sleep. I ususally get tired at six o clock for my afternoon nap and wake up at eight. My natural sleep cycle also has me going to bed between 0 and 2 am and waking up between eleven and 13 pm. I can also get by with 10 hours of sleep at night, but if it gets any less I get sleep deprived and more sleepy by the day. When I have been sleep deprived I tend to sleep longer than 11 hours, my record has been 23 hours of uninterrupted sleep, leaving me really confused for waking up one hour earlier than going to bed. Obviously my sleep rhythm does not fit in society so I am usually sleep deprived trying to fit into the corsett society forces me into. Thank god for sundays.

  18. Samir


    26 dias atrás


  19. Võ Thái Sơn

    Võ Thái Sơn

    26 dias atrás

    make them a meal

  20. Botty Paige

    Botty Paige

    27 dias atrás

    What kind of lunatic measures time in decimal?

  21. Quincy Allen

    Quincy Allen

    27 dias atrás

    19.4? those are baby numbers. this narcoleptic gets like 21-23 hrs/day

  22. A Best Mistake

    A Best Mistake

    27 dias atrás

    Stephan, you are getting swole!

  23. Olaf Elsbeurry

    Olaf Elsbeurry

    27 dias atrás

    Why am I not on this list???

  24. Redpandaflying


    27 dias atrás

    O' Possum, where art thou???

  25. SectorCodec


    27 dias atrás

    It's pronounced possum. The o is silent.

  26. Supraman1987


    27 dias atrás

    It's not "O-Possums"; it's pronounced "Possums" with a silent "O".

    • J R

      J R

      24 dias atrás

      Pretty sure they are 2 different animals. I live in the northeast U.S. and pronounce the O.

    • Stevie Hottman

      Stevie Hottman

      25 dias atrás

      In Minnesota it's "Oh! Possums!" (Said with adorable "Fargo" accent)

  27. DashedEuthanasia


    27 dias atrás

    I actually thought cats would be on this list.

  28. nikon12x42


    28 dias atrás

    scieshow are chidl abusers, show is presented by deceptrive transvestites, theyre into religion and abusing babies and manupilating children cdc explain that vaccines kill. social media chidl abusers spend all day lying for vaccines. check out hank green and his wife how much they look liek transgenders. thats how they were brought up, satanic liars

  29. J, Williams

    J, Williams

    28 dias atrás

    I hate sleeping.. maybe its because ive spent a lot of time in combat zones but its just annoying for me. ive spent days awake just because ide rather not sleep.

  30. Entertainment Aspects

    Entertainment Aspects

    28 dias atrás

    The O-possum pronunciation was frustrating to me😂

  31. N O

    N O

    28 dias atrás

    Rabbits sleep with their eyes open lol

  32. Dejay Rezme

    Dejay Rezme

    28 dias atrás

    A 1/10 of a gram? That seems way too little. That would be a bug or something.

  33. Count Rackula

    Count Rackula

    28 dias atrás

    Bruhhh where are dis mans sideburns :(

  34. piaoliang jiejie

    piaoliang jiejie

    28 dias atrás

    I wonder if they visit other realms when they are asleep

  35. deep hazarika

    deep hazarika

    28 dias atrás


  36. David Gutowski

    David Gutowski

    28 dias atrás

    Wish you'dve included the dolphin's weird sleeping habits in this video They can put one hemisphere of their brain to "sleep" at a time, thus remaining alert and swimming even while "sleeping"

  37. pancho lopez

    pancho lopez

    28 dias atrás


  38. Dragoth1337


    28 dias atrás

    I was expecting to see my chow chow on this list.

  39. Sam


    28 dias atrás

    There's a pair of altricial animals going to sleep in my house right now.

  40. Babs likes cartoons

    Babs likes cartoons

    28 dias atrás

    To the person who titled this video: I'm on to you.

  41. irmawati febriani

    irmawati febriani

    28 dias atrás

    Surprised you didn't have cats on the list.

  42. Diamond Jub

    Diamond Jub

    28 dias atrás

    5 animals that don't sleep enough #1: me

  43. Space duck

    Space duck

    28 dias atrás

    I thought this was going to contain a bed adertisement when I read the "(and one that might not need to)" part of the title

  44. Sadboi 123

    Sadboi 123

    28 dias atrás

    Bruh I don’t know if I am sleep deprived or if I’m only sleeping

  45. Petr Knapp

    Petr Knapp

    28 dias atrás

    One tenth of a gram? Are you sure?

  46. Deeman semen

    Deeman semen

    28 dias atrás

    Hey u forgot the 6th one...me

  47. arran williams

    arran williams

    28 dias atrás

    Thumbnail says 6 title says 5 hmmm

  48. Tmp866


    28 dias atrás

    *Cicada would like to know your location*

  49. The12345stephen12345


    28 dias atrás

    “Someone can’t supply enough energy to a foetus and themselves” don’t you mean females? I can’t believe a scientific channel is bowing down to the silly will of the left

  50. Sanne


    28 dias atrás

    My guinea pigs seem to never sleep. I always closely watch. Please do a video on short sleepers!

  51. Limey


    28 dias atrás

    I want a video about hibernation now, and how it impacts animals differently than regular sleep cycles.

  52. Dylan


    28 dias atrás

    I mean fruit flies also only live for a couple weeks max, they don't have time to sleep.

  53. chookchook


    28 dias atrás

    8th animal is myself, I go into a dead sleep, no rem, no dream, nothing. I have been know to sleep for 48 hours and if I have something important to do the next day I cannot sleep at all in fear of not waking up on time. I am also absolutely deaf when I sleep.

  54. EnderLord99


    28 dias atrás

    Snails sleep for 3.

  55. Celina K

    Celina K

    28 dias atrás

    2:35 can't eucalyptus trees sometimes explode in a spontaneous combustion

  56. InfiniteWonderz


    28 dias atrás

    Koo-ah-la not kow-lah

  57. poppyseed1987


    28 dias atrás

    O-possum? Isn’t the “o” silent?

  58. kiss my dirty ass

    kiss my dirty ass

    28 dias atrás

    age at 17 I hardly to reach 8hours of sleep so i try to do hardworking physically to easily get tired and sleep but couldn't reach 1-8 sleeping till now much worst 3 hours like a chicken sleep not drinking alcoholic beverages..drunk 5,6,7average..send some advice with no medicine prescription all natural.. fakkar

  59. Bruce Lee

    Bruce Lee

    28 dias atrás

    Ungrateful bats. The birds want to make meals for them and all they do is sleep all day.

  60. Suraj Sahoo

    Suraj Sahoo

    28 dias atrás

    Sorry can't complete the video. I'm sleepy again.

  61. Cookie


    28 dias atrás

    6th me in my lecture class

  62. CG Account

    CG Account

    28 dias atrás

    I went to a zoo to see koalas. I stood there for 20 minutes hoping to see one move lol. I was told I'd have to wait another hour when they give them so food. It was so hot I had to leave. I'm assuming they were alive but saw no evidence that they were.

  63. Nostalgia


    28 dias atrás

    As always, great video.

  64. Ryan Peter

    Ryan Peter

    28 dias atrás

    A convincing theory on why humans are born "early" is that because we are bipedal AND have a huge brain/cranium, and that gestating any longer would require a hip structure that would limit the mother's mobility

  65. ? K I N G

    ? K I N G

    28 dias atrás

    I’m really inspired by what you do! That’s why I’m gonna start making videos that explain things about everything.

  66. Shehneela Ehsan

    Shehneela Ehsan

    28 dias atrás

    Hi, I'm sorry my question isn't related to the video but could you make a video about mewing? Is it true you can change your facial structure by mewing?

  67. carloswjr18


    29 dias atrás

    Every time you pronounced the o in opossum it felt like I was being punched in the ear

    • FamAD 123

      FamAD 123

      27 dias atrás

      Either is correct when referring to the species living in the Americas. Where as those living in Australasia are correctly referred to simply as "possums".

  68. sogerc1


    29 dias atrás

    #1 So they wake up to eat then go back to sleep? Seriously, what kind of an existence is that! Pointless.

  69. CarrotofGreatness


    29 dias atrás

    How do you tell if a fruit fly is sleeping? Does it snore, does it's eyes go out of whack in REM sleep? questions... questions...

  70. Kar Ina

    Kar Ina

    29 dias atrás

    The least I expect is a whole complete sloth dedicated video, in order to correct this offense -__-

  71. Perun42


    29 dias atrás

    >___> Where is sloths? They deserve to be in that list! They work so hard. We need a new version of this video! With sloths and all people who expect to see them in it :P

  72. Hrasy Waia

    Hrasy Waia

    29 dias atrás

    Personally, I find this video insulting.

  73. TGGeko


    29 dias atrás

    Isn't the first O in opossum silent?

  74. Ben Sama

    Ben Sama

    29 dias atrás

    Lying motionless can sometimes be a boon due to camouflage

  75. Redwolfvirus


    29 dias atrás

    "-some of the safer foods in the koala's environment" Omg why does anything even bother thriving in Australia? It's clear that the continent wants to see every creature die so it can be the biggest lonely rock in the oceans. 😂

  76. Jmack 4275

    Jmack 4275

    29 dias atrás

    I sleep on average 10-15 hours per night. Any less than 10 hours and I'm still tired

  77. Dejan Andric

    Dejan Andric

    29 dias atrás

    Fruit flies are so phylogenetically distant from mammals (humans) that the finding they don't require sleep is not as amazing as most people would assume.

  78. AG.


    29 dias atrás

    Sleeping lonely and sleeping with a beautiful partner or two very different things.

  79. AtarahDerek


    29 dias atrás

    I'm watching this at nearly 4 am because insomnia has screwed up my internal clock. Trust me, I need sleep. Unlike most people, I am not affected by chemical stimulants such as caffeine. And all of my motor functions and decision making skills diminish severely when I am sleep deprived. It sucks. I've always been more aware than most of what environmental and internal factors play into my ability to function, and I can tell you that for me, sleep is critically important.

  80. FriedEgg


    29 dias atrás

    Do bats hibernate? If so, do they need to fatten up in the fall? If not, what do they feed on in the winter?

  81. M McCoy

    M McCoy

    29 dias atrás

    My kid is 16 now and he sleeps WAY more than he ever did as a baby. Where are these infants?

  82. Laurann


    29 dias atrás

    4:21 Well, childbirth up until recently (in evolutionary history) was already deadly enough. If babies were any bigger, fewer new moms would survive, and that wouldn't be great for the survival rate of those babies either. That seems reason enough to have babies pop out sooner rather than later. Or am I wrong?

  83. Mountain Wolf

    Mountain Wolf

    29 dias atrás

    I wish I could be sleeping 19.7 hours a day. There’s no good reason to be awake anyways.

  84. jhubeJELLO


    29 dias atrás

    Koalas are up there with Sloths and Sunfish when you're wondering how the heck they have evolved or why they are even alive.

    • Stevie Hottman

      Stevie Hottman

      25 dias atrás

      And Pandas! They're bears that refuse to hunt so they eat bamboo, won't mate, and when they do, their offspring are tiny golf balls that float away with a strong gust of wind. HOW?

  85. clarkevander


    29 dias atrás

    I am the animal that needs to to sleep but doesn't quite get to.

  86. Darth Pro

    Darth Pro

    29 dias atrás

    DO the fruit flies still reproduce when sleep deprived?

  87. Penny Layne

    Penny Layne

    29 dias atrás

    My first son didn't get the memo on sleeping 16 hours a day! Omg, he rarely slept for even 8. Took him to several doctors who did studies, then All said "colic", anyway, fond memories. 😂

  88. po


    29 dias atrás

    Was expecting sloths

  89. Abu Zohaifa

    Abu Zohaifa

    29 dias atrás

    Scrolling through the comments section, I realized how lazy this generation is.

  90. insertswear


    29 dias atrás

    How could you do such a video without mentioning sloths?

  91. PurpleAmharicCoffee


    29 dias atrás

    I was expecting cats and sloths to be on this list.

  92. Martin Wilke

    Martin Wilke

    29 dias atrás

    I expected slothes to be on this list.

  93. DeadLast


    29 dias atrás

    Wheres are sloths?

  94. Maks Brud

    Maks Brud

    29 dias atrás

    my cats should be on this list because they are awake only when they're hungry and want to play

  95. DZ@J


    29 dias atrás

    By the way...... do insects(and all other arthropods) sleep?

  96. Queen Anemone

    Queen Anemone

    29 dias atrás

    Can we GMO some eucalyptus leaves that have more nutrients? Imagine what the koalas could be capable if they had more energy??

    • Hermititis


      28 dias atrás

      That's how you get drop bears.

    • Michael P.

      Michael P.

      28 dias atrás

      What? There's no need to interfere with nature in this case.

    • The TiYab du 974

      The TiYab du 974

      29 dias atrás

      GODDAMN !

  97. Jeffrey Trujillo

    Jeffrey Trujillo

    29 dias atrás

    Why why why am I watching this instead of sleeping

  98. Rockin BoBokkin

    Rockin BoBokkin

    29 dias atrás

    I thought I was depressed, but it turns out that I'm actually an opossum.

  99. ogarzabello


    29 dias atrás

    My cat.

  100. Prowler Cam

    Prowler Cam

    29 dias atrás

    I thought human babies were born underdeveloped because of the size of the head. It's already squashed down during birth, imagine if it were bigger.

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