13 Quietest Animal In The World | Petforcat

Many animal enthusiasts often search for the different sounds that animals make. But what happens when someone searches for a specific animal’s sound and is amazed that this animal doesn’t make any sound?

I just want to tell you that various types of animals exist on our planet. Some animals are known to produce a lot of sound, and some are famous for their quiet nature.

Animals use their sound for different purposes, such as communicating with other animals, attracting mates, and repelling predators. But some animals that make no sound prove life can live without producing any sound.

Today, we’ll try to find the quiet animals on Earth that spend much of their life in silent mode.

Giraffe:

Giraffes are the tallest among all the animals that make noise and that are mostly kept silent. Despite having the longest tongue, measuring 18 to 20 inches in length, giraffes do not communicate with each other through sound. Although they can hiss or snort when they feel threatened.

Female giraffes can make a sound to call their young, but they spend most of their time in silent mode. Some researchers believe that giraffes also make a humming sound at night, but this sound is pretty low at 92Hz in frequency but can be audible to humans.

Rabbits:

Rabbits are one of the animals that can see behind them without turning their head back. It is because their eyes are located at the top of their head which allows them to see in 360 degrees. The others are parrots that can also see behind without rotating their heads.

After holding such an amazing title, rabbits spend most of their time in silence. However, it does not mean they can’t make any sound.

Rabbits can snore during the night, just like humans snore while sleeping. Rabbits often use body language to communicate with other rabbits instead of making different sounds.

Sloths:

Sloths that can see at 360 degrees are the slowest animals on land but can move quickly in water. Sloths are not completely silent animals; rather, they can make sounds like high-pitched squeaks.

The sound of baby sloths is louder than that of adult sloths when they call their mother. Two types of sloths exist in the world: three-toed and two-toed.

Three-toed sloths live in Central and South America while two-toed sloths live in Central and northern South America. According to some estimates, there are only 1500 sloths left in the wild. However, three-toed sloths are more critically endangered than two-toed sloths.

Snake:

Have you ever heard the sound of a snake? No, you can’t hear the sound of snakes because snakes are the quietest animals on our planet! Usually, most reptiles, including snakes spend most of their time in silence. Although lizards can make hissing sounds at night that can be heard by human ears.

Recent research has revealed that snakes can hear sounds from the air, and different species of snakes react differently to this sound. Usually, snakes have no external ears, but they can sense the vibrations of their prey through their bodies while crawling.

Turtles:

Turtles are famous for their slow-moving behavior, but you will be surprised to know turtles can produce 13 different types of sound. These sounds include hissing, bellowing, and grunting. Although turtles spend most of their time underwater, their sound can only be heard when they move on land.

Usually, turtles have no vocal cords, but they can produce different types of sounds. Despite the capability of turtles to produce a wide range of sounds they almost spend most of their time in silence.

Some turtle sounds are low frequency and inaudible to humans but mostly are audible.

So, it is safe to say that turtles aren’t completely silent creatures.

However, it is worth noting that turtles are not known for their strong hearing abilities. Turtles won’t respond well if the sound frequency is lower than 100 Hz or higher than 1000 Hz.

However, most sea turtles, including Leatherback and green sea turtles, can hear well if the sound frequency is between 200 and 750 Hz.

Jellyfish:

Jellyfish that are known to live without brains also hold the title of completely silent creatures of the sea. Jellyfish lack vocal cords, eyes, ears, and hearts. Although most jellyfish swim in groups, they don’t need sound to communicate with other jellyfish.

The lion’s mane jellyfish is the largest among all jellyfish species and also cannot make any sound.

Japanese and Brazilian scientists have discovered a new species of jellyfish in the Pacific Ocean at a depth of 2,664 feet. The scientist believes that this jellyfish is completely different from other jellyfish and also small in size.

Goldfish:

Goldfish are one of the fish that look very cute, and most people keep them as pets. Goldfish do not make any sound to get feed from their owner or communicate with other fish.

Although goldfish can come to the upper surface of the tank when you walk near the tank. Some fish owners might think that goldfish can hear the sound. Actually, goldfish have no vocal cords & no ears, but they can feel the vibration of ripples in the water.

Scientists have recently discovered the largest goldfish in Western Australia. Usually, goldfish typically grow up to 4.7 to 8.7 inches in length, but a recently discovered giant goldfish was 32 inches in size.

Sharks:

There are over 400 shark species exist in the ocean, but you may be surprised to learn that none of them can make any noise or sound. Sharks have 4-foot wide mouths, but these mouths are unable to produce any pitch of sound. Sharks usually communicate with other sharks using nonverbal cues.

Sharks also prove that making a huge sound is not a characteristic of apex predators.

Crabs:

Approximately there are 4,500 crab species live in the ocean and other parts of the world. None of them can communicate with any sound. Scientist believes that crabs can make a sound when they rub their claws with their legs.

They also communicate with this sound. Not all species of crabs can produce any pitch or sound using this technique called stridulation.

Crabs usually rub their claws to make a sound when they feel threatened by giant crabs or other predators.

Butterfly:

There are approximately 17,500 species of butterfly exist in the world. And 750 species only live in the United States. You will be surprised to learn that butterflies have ears and can hear the sound of prey.

However, they can not make any sound, but some butterfly species are known to produce sound. These butterfly species rub their legs or wings to produce sound for different purposes.

Butterflies also don’t sleep, but they can rest in groups. They usually take long rest during the winter season to save energy for migration in summer.

Worms:

Worms are completely silent creatures. There are 20,000 species of worms with three different groups called flatworms, roundworms, and segmented worms living on our planet – earth. Worms spend their entire life without making any sound as they lack eyes, ears, teeth, lungs, and limbs.

Some worms, like earthworms, communicate using touch. Worms that are blind, but they can feel the vibration of their prey moving nearby.

Snails:

Snails live in forests, wetlands, gardens, and cities and lack vocal cords that can produce sound. There are 60,000 species of snails on the earth, of which 78% live on land. Some experts believe 35,000 species of snails live away from water.

Some snail species communicate with other snails using pheromones. Generally, most insect species spend their entire life without making any sound. But cicadas are the only insects that are known for their loud noise.

It does not mean other insects are silent. They can produce some sort of sound using their own method.

Octopus:

Another silent creature of the ocean is the octopus. An interesting thing about the octopus is the nine brains, three hearts, and blue blood. Despite these amazing characteristics, octopuses can not make sound.

However, they use various other methods like body patterns and changing skin color to communicate with other species.

The lifespan of an octopus relative is often shorter than that of other sea creatures, typically ranging from 1 to 5 years.

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