My guppies sleeps at night by stop swimming and descent to the bottom. At night when i turn on my room light, they wake up and swims.
131813
No the do not sleep. Sunnies and Northerns and perch sink near the bottom, and remain somewhat dormant. Bass may actually remain active at night and can easily be caught with floating rapalas reeled slowly across the water.\n\nTake a bright flashlight and walk along the shore shining the light into the shallows, and you will be amazed at the things you can see.
387207
Dolphins have to be conscious to breath. This means that they cannot go into a full deep sleep, because then they would suffocate. Dolphins have "solved" that by letting one half of their brain sleep at a time. This has been determined by doing EEG studies on dolphins. Dolphins sleep about 8 hours day in this fashion. \n\nA dolphin's behavior when sleeping/resting depends on the circumstances and possibly on individual preferences. They can either:\n1. swim slowly and surface every now and then for a breath\n2. rest at the surface with their blowhole exposed \n3. rest on the bottom (in shallow water) and rise to the surface every now and then to breath.
291441
Ohhh yes they do!!\nEspecially higher mammals like dogs and cats.\nTheir brains are put together a lot like a human brain and when they sleep it does the same mysterious stuff our brains do every night or during napping. \nI know it's true because I have watched my sleeping dog twitch and move his legs and even have rapid eye movements!!\nThe info can be found from the source I provided.\nIt's very cool research! Good question!
13092
Use a night light.  Turn it on everynight before you go to bed.  I'm sure after awhile you'll forget about turning it on and won't even realize it.  Also, lots of times if you open up your curtains or blinds a little bit light from outside comes in.
584
Nobody knows for sure; however, there are many theories.  Below is a very plasable one:\n\nJerome Siegel, of the University of California in Los Angeles, along with colleagues elsewhere, has suggested a third possibility. Writing in a special review of sleep in the current issue of Nature, Dr Siegel says that it may be related to defence against oxidative stress. Smaller animals have higher metabolic rates, and this results in the generation of higher levels of small, highly reactive molecules such as free radicals. Studies on rats show that when they are deprived of sleep, their oxidative stress increases. Dr Siegel proposes that animals with higher metabolic rates need more sleep to interrupt and protect against this kind of oxidative damage, as well as repairing any damage done.
56669
it's a dark water & if they put lights it might distract the lochness...\n\nand it will stop all the mystery and that was not fun anymore for the next generation.
299586
i promise you they sleep standing up. i own horses and have my entire life. sometimes they will rest laying down but most of the time they just rest laying down and sleep standing.  cows are the same way. i PROMISE!!! i own both cattle and horses and have seen them sleeping.
150432
Suggestions:\n\n1. Get a dog that barks early every morning.\n2. Get one of those alarm clocks that has wheels and runs away from you when you get up to shut it off.\n3. Drink LOTS of water before going to bed so you MUST get up in the morning to go pee. Then jump in the tub before you have a chance to go back to bed.\n\nHope this helps!!! ; )
422333
i guess its called reflexes its not controllable. some people even talk when they dream. have you ever seen a cat or a dog sleeping, notice that their paws may move and they may have some uncontrollable light barking (for dogs). i guess theres nothing you can do sorry.
267848
the same way we sleep on try land. most fishes have a thin skin over their eyes so they can sleep
51970
most likely fish, or another animal that lives in water, perhaps an early reptile
206842
Yeah, it's 6:15 a.m. and the first thought on my mind was - "I can answer more questions!" and jumped out of bed. Addict by nature, I guess. The deer are out feeding in the hay. The sky is a true definition of the color gray. Actually, I'm waiting for the ice to go melt so I can go fishing. I stepped out on the lake yesterday and it was like a small earthquake. Happens everytime I go out on the water. It's the fish, trembling in fear of me. Ha ha. Good morning and have a great day.
162094
do you have a "small" enough a pond to observe them at night?\nOr are you just asking this simply you could not see them on the lake at night when you were camping?
176607
they still do, if you have ever heard of a guppy fish, they will, and also there is a thing called a snake fish that does too.
225432
Biologists believe that during waking hours there are chemical changes (like harmful substances) and physical changes (wear and tear on cells) that are corrected when we sleep. Different stages of sleep are believed to have different functions. For example, REM sleep (when we dream) is believed to be when we consolidate learning and make memories. Slow wave sleep (the times when we are really quiet and not dreaming) is when restoraton is believed to take place. \n\nAs somebody said earlier, if we dont sleep we eventually die. Sleep deprived Rats became uncoordinated, lost weight due to climbing metabollc rates and appeared to starve to death though they were fed. Their immune functon was also compromised but cause of death was not really clear. \n\nMoreover, If you dont sleep you get haggard and ugly, its hard to concentrate, your family will eventually hate you for being a grouch and you will lose your job for making mistakes and telling off your boss. (if you dont kill yourself while driving to work first.) Everything is better with sleep :)
674325
Animals that can't swim away.
133985
My little brother still does. Once we had to tackle him because he was beating the crap out of the fridge in his sleep. He was black and blue for a week. He used to run outside and even learned how to work locks in his sleep so we had to put a flip over style latch low too the floor. He couldn't ever figure it out. I would wake up with to hear lightly, "clank, clank, clank" it was my baby bro slowly pulling open the door only to be stopped by the latch. He would have this really confused look on his face and I would put him back in bed. LOL He used to call me Mom in his sleep and would ask if I could make whatever (usually incomprehisible at that point) better. I would say that I took care of it and he would go back to bed. He doesn't do it a whole lot anymore now that he has a new dog. For some reason having that mutt in his bed keeps him quite. Either that or he just grew out of it. I used to do it too (although I was never as bad as my brother) and now I rarely even talk in my sleep anymore. Hmmmmmmm...