The mosquito is responsible for more deaths worldwide than wild animal attacks. The mosquito is the silent predator who strikes and leaves disease in its wake. For this reason alone the mosquito should make us all fearful for it gives no warning of it's oncoming bite.
The Mute Swan, however, is quiet but fierce and males are extremely territorial during the breeding season. It's considered to be one of the most dangerous birds in the world. If you think male geese are bad enough, you don't want to know what it's like for male mute swans to beat them.
Monkeys and apes lack the neural control over their vocal tract muscles to properly configure them for speech, Fitch concludes. "If a human brain were in control, they could talk," he says, though it remains a bit of a mystery why other animals can produce at least rudimentary speech.
The name 'mute' derives from it being less vocal than other swan species. Measuring 125 to 160 cm (49 to 63 in) in length, this large swan is wholly white in plumage with an orange beak bordered with black. It is recognizable by its pronounced knob atop the beak, which is larger in males.
New research shows they can also quiet down when danger is near. When under attack, people and animals alike have an inbuilt fight or flight instinct. But hatchlings of ground-nesting birds can neither flee nor defend themselves; their response in the face of danger is to hunker down and mute their cries.
One of the best sounds to get birds to scatter (and perhaps not to return) are synthetic sounds such as high-frequency, ultrasonic sounds. If you add in a frightening visual object such as an owl statue or scarecrow with shimmering tassels, the strategy becomes all that much more effective.
Birds depend less on the senses of smell and taste than people do. Most birds have little use for the sense of smell. The odors of food, prey, enemies or mates quickly disperse in the wind. Birds possess olfactory glands, but they're not well developed in most species, including the songbirds in our backyards.
Naked mole rats are nearly deaf because their ears can't amplify sound. Naked mole rats have poor hearing because, unlike other mammals, they have abnormal outer hair cells that can't amplify sound. The animals could be used to model human deafness and help develop treatments.
There are a handful of animals that whisper. A female fish, called the croaking gouramis, will whisper purrs to its mate to initiate sex and one species of bat, the barbastelle, uses whispering as a technique to avoid detection by moths with ears, so that they can eat them.
Koshik the elephant
Koshik would place his trunk into his mouth to create a vocal tract that facilitated the expression of pitches and formants similar to that of human speech.
One of the most surprising cat facts is that cats can actually make almost 100 different sounds. From the peeps of kittens to the meows of adults, cats have a wide range of vocalizations.
Animals that are able to talk like humans are all “vocal learners,” BBC explains. They hear sounds and learn how to imitate them. Besides humans, some of the most skilled vocal learners include parrots, songbirds, dolphins, and beluga whales.
It's Natural to assume that animals with large teeth and aggressive reputation animals like lions or poisonous snakes are the world's deadliest killers. But appearance not sufficient to judge the creature's deadliness. Mosquito has recorded the maximum killing of people every year.
Nocturnal and slow-moving, the Aardvark is a rare sighting. Its large ears are extremely sensitive and help this shy animal to avoid predators like leopards, lions, hyenas, and humans. This adaptation keeps the shyest animal in Africa, the Aardvark, safe and very difficult to spot.
Cats' hearing is especially sensitive at the middle frequencies; when they're staring at the wall, they are probably hearing something moving inside it. That means your cat can hear you when you whisper, so no need to shout. It also means cats are easily distracted, and easily startled, by sounds.
Some animals, including parrots, songbirds, beluga whales, and dolphins, can mimic human speech. These animals are vocal learners and are adept at mimicking noises after hearing them. They may appear to be speaking, but they are excellent imitators.
In other words, what you can hear at 20 feet your dog can hear at 80 feet. A mutter or whisper to us is normal conversation tone to a dog. A pounding rock concert where we are shouting to hear each other but otherwise bopping along with the music can send a dog into a hearing overdose.
Despite being known as gentle giants, blue whales can emit sounds loud enough to cause hearing loss in humans. These massive creatures can make noises as loud as 188 decibels, which is 38 decibels higher than a jet taking off 25 meters away.
Snails, jellyfish slugs, and worms are some examples of animals that do not produce sound to communicate.
You've probably heard the expression “elephant ears.” It describes someone with an extraordinary ability to hear sounds that would be inaudible to virtually everyone else. Well, the phrase is extremely accurate! Elephants have some of the best hearing around. They can hear at frequencies 20 times lower than humans.
The strong smell of peppermint is enough to repel birds on its own. Peppers. With most peppers being spicy, their smell often creates a burning sensation. Specific types of pepper that can deter birds include chili peppers and cayenne pepper.
In spite of the frequency with which people collide with glass, most people are sure that they can actually see it. In fact, glass is invisible to both birds and people: you can see the dirt on dirty glass, but not the glass itself.
Researchers concluded that chemosignals—odors that we emit in response to our emotional state—communicate across species to dogs. So, if we are scared, they can smell it and get scared, too.