Ants and snakes do not have ears, but they can feel vibrations with the help of other body parts. Birds and bats have ears for hearing.
Baleen whales — some of the world's largest animals — do not have external ears like humans. Cal State Fullerton biology graduate student Madison Wilson became intrigued by how these marine mammals hear and communicate over vast distances.
There are various animals which do not have ears such as ants, snakes, etc. Since they do no have well developed ears, they depend more on their other senses. Animals like snakes sense vibrations around them to hear. While ants use their antennae to sense things around them.
How do they hear? Snakes do not have an external ear, but they do have all the parts of the inner ear that we do. Their stapes—called a “columella”—is slightly different from ours in that it connects to the jawbone, enabling them to sense vibrations. However, they can only hear a portion of the sounds we hear.
Crocodilians possess a slit-like external auditory meatus, bounded above by a large superior ear-flap, and below and in front by a small inferior ear-flap. The anterior part of the meatus in living animals is usually open when the top of the head is out of water and closed when it is submerged.
The frog does not have an external ear comparable to that of most other terrestrial vertebrates. There is no pinna, and the vast majority of known species lack an ear canal.
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.
Mice hear higher frequencies than humans; their frequency range is 1 kHz to 70–90 kHz. They do not hear the lower frequencies that we can; they communicate using high frequency noises some of which are inaudible by humans.
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.
Some animals like birds, reptiles, insects, amphibians do not have an external ear. These animals have funnel-shaped ears which help in processing the sound but lack external ears. So, we can say that birds, crocodiles, snakes, lizards do not have external ears.
Born Blind
Another one is the star-nosed mole, the fastest-eating mammal in the world, who uses touch as their main sensory organ. The olm, the blind cave salamander that looks like a baby dragon, is another naturally blind animal, which can yet perceive light through its hidden eyes and skin.
Many Nymphalidae butterflies possess ears, but little is known about their hearing. The tympanal membrane of butterflies typically comprises distinct inner and outer regions innervated by auditory nerve branches NII and NIII and their respective sensory organs.
“Surprisingly, we found that they also possess an acute sense of hearing,” he said. “They can hear sounds at distances much farther away than previously thought, even though they lack ears with the eardrums typical of most animals with long-distance hearing.”
Spiders don't have ears like we do, and many have poor eyesight. But they can sense vibrations, like those that happen when an unlucky insect touches their webs. And instead of eardrums, spiders hear using tiny, sensitive hairs that move in response to sounds.
Snails do not have ears of any kind. The snail has a mouth and a special tongue called a radula. The radula is covered with hundreds of sharp barbs, which work like teeth for eating food. The snail gets rid of body wastes through the skin or the end of its digestive system.
The sperm whale is technically the loudest animal in the world, but the answer is up for debate because how we perceive loudness is subjective. Do you measure the loudest animal by the decibels they register or by the impact of the sound itself? The dispute comes down to two animals: the blue whale and the sperm whale.
The loudest animal sound ever measured in decibels is the sperm whale (230 dB). However, the loudest animal ever to be recorded is the lesser water boatman. It is a minuscule insect that can generate mating calls as loud as 99.2 dB.
Not only can baleen whales emit calls that travel farther than any other voice in the animal kingdom, these giants of the deep also create the loudest vocalisations of any creature on earth: the call of a blue whale can reach 180 decibels – as loud as a jet plane, a world record.
Chocolate contains an alkaloid called theobromine, which has stimulating effects similar to caffeine. While humans can metabolize theobromine quickly, many animals—including dogs, cats, birds, and rabbits—cannot, and even a small amount of it can poison them.
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.
Boasting the largest vocabulary of any non-human animal, Chaser the Border Collie knows the names of 1,022 different items, including 800 cloth animals and 26 Frisbees. A new study has shown that dogs, as well as many other species, have the ability to process and understand words.
Abstract. THE fact that the common frog (Rana temporaria) is capable of crying out lustily when he feels himself in danger, does not seem to have been frequently remarked.
Frogs have a three-chambered heart. It consists of two atria and one ventricle.
The general structure of a shark's internal ear resembles that of humans, but a shark's is much more sensitive. Sharks can hear disturbances in the water caused by struggling fishes from great distances. As in humans, the shark's inner ear also controls balance.