Why do coyotes howl at night?
411106
Yes, from what I understand, coyotes use all of their senses of sight, smell, touch and hearing to communicate. \n\nThey are highly vocal mammals, using 3 distinct calls: squeaks, distress calls, and howl call, which consist of a quick series of yelps, followed by a high-pitched howl. Howling may act to announce where their territory is to other packs. \n\nCoyotes also howl when two or more members of a pack re-unite and to announce to each other where they are. \n\nLots more info here:
802861
I am not sure what you mean. Do you mean eyeshine: animal eyes seeming to glow in the dark looking at you? \nCheck out the links to see the explanation for that.
755092
Tigers usually hunt in the tall grass (the grass is USUALLY dry, brown yellow). The stripes match the up-and-down pattern of the grass, convenient for catching prey in the wild. They are able to stalk silently and be unseen until - ROAR... the antelope meets it's maker. :'( a bit sad...
1114815
the outside noise makes them do this.
1135317
If it's a medium-sized, rather ugly mottled black/brown bird that congregates in the evenings to form a roost community then it may be grackles.  They have no song, just a rather raucous squawking call and when they gather by the hundreds in the trees nearby, they are a nuisance of the first order.  Much worse than pidgeons.  We have them in Texas and I believe that at different times of the year they plague most of the US.
611924
The bright coloration and unique pattern act as a warning sign to potential predators. It is much the same as poisonous snakes.
689617
Animals that see at night have several adaptations; these can include some or all of the following:\n- Relatively larger eyes (example: owls)\n- High density of rods (light-detecting sensory cells). Rods have a pigment called rhodopsin that is especially sensitive to light even at low levels (in these animals, the concentration levels of rhodopsin are also higher).\n- Possession of a tapetum lucidum (this is Latin for "bright or clear carpet"). This is a highly reflectant layer that is situated behind the retina, it collects all the light including the faintest wavelengths and redirects it to the retina, enhancing vision.\n\nSee a diagram here:\nhttp://www.natureshift.org/rangerR/forest/images/eye-dia.jpg\n\nThis reflecting layer is what causes the eyes light up when they are illuminated by strong focused light. The color of the eye shine depends on the structure of the tapetum lucidum and also on the pigmentation of the animal. \nSee more about these structures in the following Q&A:\nhttp://answers.yahoo.com/question/;_ylt=AuiC1gBR8wcII9_SKbjYh4MjzKIX?qid=1006033114457\n\nThis high sensitivity to light is also reflected in the shape of the iris. Nocturnal animals often have vertical pupils that are able to narrow to mere slits during the day, to protect the extremely sensitive mechanism from the intense daylight.
19027
I think the scientific explanation is that this is a behavior trait that is hard-wired into their brains through the wonders of natural selection.  When animals are born (including people), their brains (and actually their entire physical bodies) are pre-programmed to do certain things.  They eat when they're hungry.  They "feel" hunger when they haven't eaten in a while.  They run when they're scared.  They feel scared when they see, smell, hear, or feel certain types of things.  Their hearts beat.  Their eyes blink.  They sleep when they're tired.  Having these characteristics gave them the ability to survive as a species and be around today to be observed by us.  Animals who had hearts that didn't "know" to beat automatically didn't last long.\n\nSo flying south for the winter is an instinct that allowed birds to survive.  The many birds who lacked that instinct had more difficulty surviving.
949762
It is faster and cheaper but also a lot more dangerous.  A coyote's job is to protect his conejos.  Depending on how much you like your family, it may be worth the security to pay a coyote.
897472
Sorry David, having given you a facetious answer on your "twin" question, I though I should give a more serious one here :\n\nIt's possible that it's for helping in communicating with other lynxes. Ears are used a lot in felines for communicating mood (just have a look at a cat when its angry, scared, confused, happy, the ears give the game away).\n\nSo if ears are used in communicating, then having black tips to them would highlight the message.\n\nPS I don't KNOW this, I'm not a zoologist, just a guess.
243429
Yeah, they're all talking about their favorite all-time baseball player, where they can find house shingles, and the stuff on the outer layers of those trees they mark. ; )\n\nSeriously, I don't know if it's conversational in nature, but probably more of a territorial thing: they bark to let other dogs know they're around and as a warning to not trespass. My guess is that when the last one barks, he/she knows the other dog "left."
302759
thats wht even i think many times. may it could be because of the unusual birds and insects which come out during only night. it is definitely seeing something unusual thts why it is barking.or probably the dog is seeing something else entering its teritory. i have also heard tht dogs have the sense of seeing dead souls. may be its seeing some soul around it, which may be annoying them.
675987
They let out a VERY high pitched "squeak"...the sound of it echoes off of whatever objects are around them and they find their way through caves and stuff by the sounds they hear.  Hard to explain...I'll let someone else explain it in more detail.
300017
they come out at night, mostly
228453
"When a man is riding through this desert by night and for some reason -falling asleep or anything else -he gets separated from his companions and wants to rejoin them, he hears spirit voices talking to him as if they were his companions, sometimes even calling him by name. Often these voices lure him away from the path and he never finds it again, and many travelers have got lost and died because of this. Sometimes in the night travelers hear a noise like the clatter of a great company of riders away from the road; if they believe that these are some of their own company and head for the noise, they find themselves in deep trouble when daylight comes and they realize their mistake. There were some who, in crossing the desert, have been a host of men coming towards them and, suspecting that they were robbers, returning, they have gone hopelessly astray....Even by daylight men hear these spirit voices, and often you fancy you are listening to the strains of many instruments, especially drums, and the clash of arms. For this reason bands of travelers make a point of keeping very close together. Before they go to sleep they set up a sign pointing in the direction in which they have to travel, and round the necks of all their beasts they fasten little bells, so that by listening to the sound they may prevent them from straying off the path."\n---- Marco Polo, Travels\n\nReally, it's a big debate over whether or not he actually went to the Orient or not.
620738
There is a species of hyena, who are called laughing hyenas. But actually hyenas don’t laugh. When this creature is on the prowl or becomes excited, it makes a howling and chuckling noise that sounds like a laugh.
813277
Hmmm...not sure if a decoy of an owl perched outside your window would work or those stick-on silouttes of predators, such as hawks. Those work for smaller birds to keep them from banging into the windows...\n\nAre they purposely "attacking" or just hitting it becuz of the reflection they see?\n\nSleep in a different room? (just kidding)