How does Dicraeosaurus protect itself?
486220
http://www.watchtower.org/library/w/2004/4/1/
846482
They generally dont break on their own, but you do have to be very careful when handling them not to break either their legs or feet because they are so thin and they thrash around a lot when handled (in a zoo setting, please dont go around capturing flamingos). if they were prone to leg breaks, the species would not survive.
675372
Each has it's own methods.\nSurprisingly undergrowth and thick forest provide excellent cover. I have seen pigeons tough it out by hunkering down in a flat field, but suspect that is just the normal sleeping behaviour.\nAny creature that has it's own territory will have it's own safe places (holes, nests, caves, thick bushes, etc.), migrant species may move out of the danger area.
1115360
The simple answer is, of course, different anatomical adaptations. Since water helps support the whales mass, their skeletons are relatively light compared to a land animal's. The dinosaurs had made many adaptations to their weight -- just as elephants, hippos and rhinos have.\n\nThat said, a small fall for a creature of large mass is likely to do internal damage in a way that never happens for small animals.
773670
So their body can react properly to keep them warm.\n\nSo they can avoid predators\n\nSo they can find prey\n\nThere's 3
89291
I just saw on the Discovery Channel that they have created a shark repellant.  This is a device that omits a frequency that the shark dislikes.  A scubba diver attached this to his tank and then the swimmer pushed a button that released the frequency...I guess sharks do most stuff because of vibrations and frequency in the water...it's kinda like their eyes.\n\nAnyways, scientists are hoping to develope this further so they can get rid of nets along the coast <which kill sharks, dolphins, and turtles>.
947515
Most crocodilians are protected by Endangered Animal Legislation, however through poaching, it is estimated that about 5,000 are killed (most are in Africa). Other crocodilians are destroyed because of the danger to humans but the number is rather small, perhaps 500 to 1,000. In Florida, Thailand, Malaysia and elsewhere, Crocodile farms produce animals for the leather and to a smaller degree for the meat (you can buy alligator meat in many places in Florida and it's on the menu in restaurants there).Because of our awareness of the enviroment and vanishing species, crocodilians are making a slow come-back and it Florida, Louisiana and Georgia, the population has returned and may have to be controlled by hunting by license. Alligators are often found in swimming pools. The gharials and the False Gavial are being bred in captivity as their wild population was not sustainable. Crocodiles are also responsible for more human deaths than all of the other predators, such as tigers, etc (snakes are not predators).
362100
There is such good contact, between fine hairs on the feet of certain animals and the surfaces to which they cling, that van der Waal's forces can hold them firmly. Yet these forces are weak enough to let the animal peel its feet off, to walk or jump etc.\n\nSee for example these articles:\n\nhttp://www.abc.net.au/science/news/enviro/EnviroRepublish_1094975.htm\n\n"Spiderman suit should have been hairy\nJulian Cox\nABC Science Online"\n\nand\n\nhttp://www.abc.net.au/science/news/stories/s138473.htm\n\n"Gecko's sticking powers revealed\nFriday, 9 June 2000 \n\nScientists have, for the first time, identified the mechanism allowing geckos to defy gravity and are using the discovery to develop a new type of adhesive.\n\nIn this week's issue of Nature, University of California, Berkeley, biologist Robert Full and colleagues, report that a gecko's foot is covered by almost 500,000 hairs, each ending in spatula shaped structures that collectively create a molecular interaction with the surface....."\n\nMore at those pages.\n\n:-)\n\nPS: G'day from Australia\n\n:-)
460991
These projections interlock when the valves are closed, thus giving more protection to the animal. Also, an animal with these structures may keep their valves half-open, thus permitting water circulation but protecting the soft parts with this natural "portcullis". Some brachiopods (other marine valved animals) also have these type of morphology.
772515
An anthropod is the creature you are talking about.
468060
crao_craz is correct.  \n\nOne of the main differences in the two groups is in the form of the pen/cuttlebone.\n\nCephalopod groups differ in the level to which they have retained or lost the shell ancestral to their mollusc lineage.\n\nThe extinct ammonites had a large, robust shell that protected their body and also provided ballast and buoyancy for deep diving.\n\nThe modern nautilus has a shell, but it is not as robust as the ammonite shells were.\n\nAnother extinct group, the belemnites, had an internal shell, used primarily for buoyancy issues.  It looked almost like a cigar encasing the rear portion of their anatomy.\n\nCuttlefish also have the remnant of an internal shell.  It's essentially a turtle-like shield of bone that sits on the back of the animal.  It is porous and can trap gases, useful as ballast.  They used to use this cuttlebone for a number of purposes, including maintaining/sharpening the beaks of pet birds.  You can still buy cuttlebones for this purpose, and they're still in the cuttlebone shape, but are no longer made from actual cuttlefish bone.\n\nIn squids, the shell is reduced to nothing but a pen.  This is a sheet of stiffening cartilage-like material in the mantle that provides support and structure to the squid's body.  In most species it's transparent, and about the thickness and consistency of the plastic they use to make blister packs of batteries.\n\nIn octopus, the pen is gone completely, allowing them to squeeze through cracks and crevices as long as they can fit their eyeballs and beaks through.
98362
have you ever heard of the bombadier bettle? they are a small bug that sprays liquid at temperatures of 212 degrees Fahrenheit out of its rear by mixing two chemicals. \n\nok so now have you heard of Pachycephalsaurus (i don't know if i spelled that right!) its a dinosaur that has chambers in its  crest. these chambers are similiar to the bombadier beetles chambers. they are conected to its nose and mouth though instead of its butt. its possible that dragon myths were started from these or other now extinct animals
1138264
I can't remember the last time I really worried about a dinosaur....\n\nDo you worry about dinosaurs often?\n\nDid this worrying just start, or have you always been worried about dinosaurs?
68038
I have to give it to the monitor lizard in this case.  the gilla (sp) monster's bite is nasty infectious so all it takes is one good WHACK and eventially the lion and or tiger is down.  and i think what alot of people answering this question are forgetting is that it is a reptile.  reptiles have good armor whan it comes to getting into scraps.  and like it or not \nthey aren't as slow and dumpy as you think.  also komodo dragons have that tail, and they damn well know how to use it.  one good whack from that tail and lion/tiger instantly has a broken leg and or a few broken ribs.  or if it lands a blow up side the head it could very well render the lion or tiger unconscious. \n\neither way if they were to scrap i think if the dragon didn't win outright then both would end up dead
236910
Ichthyosaurs are reptiles,which mean they do not have a constant body temperature like we humans do.They probably live in a clmate that's not too hot or too cold.If it's too hot or cold,the ichthyosaur would not be able to control its body temperature and die.They live their entire lives in water.
544046
they are called suckers on the ends of the tube feet.  they are controlled by the water-vascular system in echinoderms, such as starfish.  \n\ngood luck with the dissection!  i did it a few weeks ago...make sure to check out the two stomachs!!
870606
Oddly, usually they don't.  Usually, a piece of bone is found protruding from the ground already, and that's how dinosaur skeletons are found.