Why do spiders curl up when they die?
817180
because thay cant hold there legs any longer email me back
1071424
A few kinds of spiders are harmful to human beings. In North America, six kinds of spiders harm people, they are - the Brown Recluse, Sac, Black Widow, Brown Widow, Red-legged Widow and the Varied Widow. \n\nWater spiders are the only spiders that live most of their life underwater. The water spider breathes underwater from air bubbles that it holds close to its body. Its underwater nest is a silk web shaped like a small bell. The spider fills the web with air bubbles, which gradually push all the water out of the bell. The animal can live on this air for several months. Water spiders are found only in Europe and parts of Asia.
463157
A few hours after a person or animal dies, the joints of the body stiffen and become locked in place. This stiffening is called rigor mortis. Depending on temperature and other conditions, rigor mortis lasts approximately 72 hours. The phenomenon is caused by the skeletal muscles partially contracting. The muscles are unable to relax, so the joints become fixed in place.
925767
Many spider families including Pisauridae and Lycosidae spend lengthy amounts of time with their offspring. Nursery web spiders will carry the egg sac in their fangs sometimes for more than a month and then they will attach the eggs to some sort of substrate and wait nearby t protect them until the young hatch and leave the nest.\nWolf spiders will carry the eggs on their abdomen until the young hatch, then they will crawl around on the mother's back unitl they are ready to leave and then they just drop off as they please.\nOther web building spiders will keep the egg sac in the nest but dont really dedicate any time to guarding or transporting them, their presence alone and a very large sticky web are usually enough to keep any would-be predators away.\n\nhope this answers your question!
491311
The bugs you see dead around the house are found on their backs because they have been poisoned. The poison causes their muscles to spasm, and that in turn causes them to flip over. Normally a bug that has flipped over can right itself, but the posion prevents muscle co-ordination and stops them from righting themselves. So when they die they are found on their backs.\n\nIn contrast bugs found dead in the garden are just as often found dead in standing positions or lying on their sides.
830871
b/c cuz they're not pink and have a spider that says salutations in their pin when they wake up...
717920
Spiders and the dark.
937435
A few reasons, check this out for a good description.\n\nhttp://ask.yahoo.com/ask/20030521.html\n\n\nA brief summary:\nFor starters, only the connecting strands of a spider web are adhesive   Secondly, a spider actually has very minimal body contact with its web.
275245
Cause they convulse from the poison or whatever else they die from.. Not all of them end up on their backs.
673316
lifelessness......death\n\na few hours after a person or animal dies, the joints of the body stiffen and become locked in place.\nthis stiffening is called rigor mortis.\ndepending on temperature and other conditions, rigor mortis lasts approximately 72 hours. \nthe phenomenon is caused by the skeletal muscles partially contracting. \nthe muscles are unable to relax, so the joints become fixed in place.
573860
Yes. Many spiders build their webs so that they are more than two feet from the ground.
847241
Spiders dont really sleep in the sense that they close there eyes in dream but depending on the spider they do have time periods where there metabolic rate slows down. Usually if its like a spider that uses its vision to hunt it will slow down at night, where as a spider that uses its web and senses to hunt it will slow down in the day.
907809
It is molting... they will grow back.\n\nHowever, it could just be reaching the end of its lifespan... they usually die at the end of fall...\n\nHere's a link for you\nhttp://ohioline.osu.edu/hyg-fact/2000/2060.html
1011251
money spiders (in the United Kingdom, from the superstition that if such a spider is seen running on you, it has come to spin you new clothes, meaning financial good fortune   \n\nHowever, you cannot kill them, nor break their web to get the luck.\n\nI have often wondered why it is just the little red spiders that are called money spiders.   Perhaps it is because they are the colour of gold.   Although I can find nothing to back it up, it does make sense to me why it is only money spiders that have the name!
371444
It's called so because after the mating ritual, the female spider (about 3-5 times larger than the male) is hungry and tired, and so if the male is unlikely, he will end up being her dinner. So, the female spider ends up husband-less (widow).\n\nAbout the black - i'm not sure if it's just because she's black in color. I interpret black metaphorically, as in the practice of her eating the man she's just had sex with is quite 'cannibalistic' and therefore, 'black'/cruel in nature.\n\nI also saw on National Geographic that the male spiders know this (as in going to be eaten), but they go ahead and mate because it is also their nature to want to procreate (sow the seeds). So, they leave it up to fate (or their legs) as to whether they live to f**k another day, or die but achieved their objective to breed the next generation carrying his genes.\n\nWho was it said "life sucks", coz he is damn right on that! =P
440401
No, spiders are actually pretty easy to kill, catch, and surprise, thus making tasty snacks for many a bird and frog- If there were any animal I would vote for having ESP, it would be houseflies.....ever tried to catch one of those?? It's like they know what you are going to do before you do!  Spiders generally have decent vision close up, but poor vision at any distance (greater than a few feet), though this varies with the spider.  They also often have hair-cells which detect vibrations in the air, and like most insects and arachnids can sense vibrations on the ground.
254040
As soon as death occurs, decomposition starts.  They float because of the build up of gasses in the lungs and digestive tract.