How do musquitoes find human beings and then bite them?
478704
When people and animals breathe, they exhale an invisible mixture of carbon dioxide (CO2) and Octenol (a type of alcohol) along with a trace of moisture. Mosquitoes and other biting insects have ultra-sensitive receptors which can detect the presence of these chemicals, or kairomones, from almost 100 feet away. The attraction is so powerful, they immediately fly toward the source of the chemicals.\n\nMoreover, circulating blood in animal and human targets radiates body heat. Mosquitoes also have sophisticated heat sensors to help them locate blood, their food supply. In effect, mosquitoes become heat-seeking missiles, following both exhaled gases and body heat directly to their target. Within 30 feet, mosquitoes can actually see their victims. When they arrive, they fly around the victim to find landing sites where blood is closest to the surface.
680219
Aligators clamp down on the victim and then drag them underwater. Death can come from blood-loss or the basic trauma of being ripped apart by those teeth and jaw, but the idea is to drown them.  You'll see croc's and gators on the animal shows biting (clamping down) and then rolling into/under the water with them still in the jaw.  After death, then the victims are eaten.  A gator's jaw is so powerful that the clamping down can easily break bones and then facilitate easier swallowing of the carcass.
677891
Most snakes aren't terribly fond of people in general.  We're massively huge compared to them, make lots of noise, and we seem to be everywhere!\n\nSo most snakes avoid humans as much as they can.\n\nWhen cornered or threatened, some venomous snakes will lash out and bite humans.  Some species are more aggressive than others, and will bite much more readily than other species, some of them with almost no provocation, but they all require provocation of some kind.  \n\nThere are no venomous snakes that will actively seek out humans to bite.
718057
Oh, they fight their predators.
910504
The humans are interesting to watch, especially if its feeding time or mating season.  I love to watch them stuff their faces full of food.  Odd creatures, yet fascinating.  If not them, see the primates first.  They seem to be the most active.
34095
They can move faster than snakes. When a venomous snake is trying to bite the mongoose, the mongoose is fast enough to avoid the bite many times. When the snake gets too tired, the mongoose eats the snake.\n\nContrary to popular belief, the mongoose is NOT immune to snake venom.
751139
Zebras and Giraffes will herd together.  Since the giraffes have their heads way up above the zebra herd, they can see a lion or other predator coming and will make an alarm call.  The zebras listen to the giraffes and so they know when to start running for their lives.\n\nFor this to be a true symbiotic relationship, the giraffes must also get a benefit, which I cannot remember what it is. At least this info is a start...
815559
Probably by using their quickness in trees to get away from predators. They, at 2.5 kg, are not going to be formidable fighters.\n\nPS Ron is giving you a localized Madagascar myth as fact. There is no truth to that story, as is presented in his site.\n\nPPS Just found out a little bit about fossas, the lemur eating predator of Madagascar. Looks a bit like an overgrown lemur, itself. Quite well within the evolutionary range of such predators, rising from the basic lemur stock.
1050535
how do you knwo thier chewing it...what if their chewing on thier toungue and they already swallowed it..lol\n\nor maybe BECAUSE I WANT TO! LOL
177567
Humans Primarly. However here is some additional information:\nhttp://en.wikipedia.org/wiki/Timber_wolf
154330
erm, they have claws and teeth that help them catch prey. They have two eyes pointing forward that helps them to see prey adn assess the distance to it better than if they were on the side of the head.
310130
when they are sprinkled with salt and pepper....\n\nhow in the world did you get into a situation that made it possible for a stranger to bite you? I would first rethink your lifestyle.
154355
humans coz they always hunt them down
682775
Polar bears view humans as prey, and actually enjoy killing and eating us. Lions are afraid of humans, and can be deterred by a blow to the nose. People wrestle alligators for fun, and win. Sharks are not interested in eating humans, and rarely attack, and they too can be deterred by a blow to the nose.
897592
You can equate it to the "Carrot and Stick" theory. If you hold the carrot far enough from the mules nose they keep following it in hopes of being able to eat it.\n\nSanctions are similar in that you tell someone (a country) they can have the carrot (that is just a little out of reach), as soon as they do what you want.
524779
lemmings do not actually behave this way.  this is a myth that walt disney invented for a nature movie.  \n\n"The cliff-death-plunge sequence was done by herding the lemmings over a small cliff into a river. It's easy to understand why the filmmakers did this - wild animals are notoriously uncooperative, and a migration-of-doom followed by a cliff-of-death sequence is far more dramatic to show than the lemmings' self-implemented population-density management plan."  \n\nso go ahead, be a lemming.  they are independent thinkers, and tend not to cooperate with overbearing mean-spirited people that would just as soon kill a lot of innocent beings instead of tell the truth.
981206
I'd have to guess their long necks, which enables them to eat leaves that are higher up on trees that can't be reached by other animals.