PDA

View Full Version : Amazing Animal Senses



jaggy4u
12-27-2004, 04:54 AM
Ants

Can detect small movement through 5 cm of earth.
Can see polarized light.


Bats

Can detect warmth of an animal from about 16 cm away using its "nose-leaf".
Bats can also find food up to 18 ft. away and get information about the type of insect using their sense of echolocation.


Bees

Can see light between wavelengths 300 nm & 650 nm.
Have taste receptors on their jaws, forelimbs and antennae.
Worker honey bees have a ring of iron oxide in their abdomens that may be used to detect magnetic fields. They may use this ability to detect changes in the earth's magnetic field and use it for navigation.
Can see polarized light.


Butterfly


Has taste receptors on its feet.
The butterfly has hairs on its wings to detect changes in air pressure.
Using vision, the butterfly Colias can distinguish two points separated by as little as 30 microns.


Cat

Has hearing range between 100 and 60,000 Hz.
Olfactory membrane about 14 sq. cm. For comparison, humans have an olfactory membrane of about 4 sq. cm.


Chameleon


The eyes of the chameleon can move independently & can see in two different directions at the same time.


Cockroach

Can detect movement as small as 2,000 times the diameter of a hydrogen atom.


Crab

Has hairs on claws and other parts of the body to detect water current and vibration.
Many crabs have their eyes on the end of stalks.


Cricket

Can hear using their legs; sound waves vibrate a thin membrane on the cricket's front legs.


Dog


Has olfactory membrane up to 150 sq. cm.
Can hear sound as high as 40,000 Hz.


Dolphin

Like bats, dolphins use echolocation for movement and locating objects.
Can hear frequencies up to at least 100,000 Hz.


Dragonfly

Eye contains 30,000 lenses.


Earthworm


Entire body covered with chemoreceptors ( taste receptors ).


Elephant

Has hearing range between 1 and 20,000 Hz. The very low frequency sounds are in the "infrasound" range. Humans cannot hear sounds in the infrasound range.


Falcon


Can see a 10 cm. object from a distance of 1.5 km.


Fish

Have a "lateral line" system consisting of sense organs ("neuromasts") in canals along the head and trunk. These receptors are used to detect changes in water pressure and may be used to locate prey and aid movement.
Some fish can see into the infrared wavelength of the electromagnetic spectrum.


Fish ( Deep sea )


Only have rods in the retina: 25 million rods/sq. mm. Perhaps they need this high density of photoreceptors to detect the dim biolumninescence that exists in the ocean depths.


Fish ("Four-eyed Fish" Anableps microlepis)

Can see in air and water simultaneously. Each eye is divided by flaps, so there is one opening in the air and one in the water.


Fly

Eye has a flicker fusion rate of 300/sec. Humans have a flicker fusion rate of only 60/sec in bright light and 24/sec in dim light. The flicker fusion rate is the frequency with which the "flicker" of an image cannot be distinguished as an individual event. Like the frame of a movie...if you slowed it down, you would see individual frames. Speed it up and you see a constantly moving image.
Blowflies taste with 3,000 sensory hairs on their feet.


Frog

Has an eardrum (tympanic membrane) on the outside of the body behind the eye.


Hawk


Normal vision for people is 20/20. A hawk's vision is equivalent to 20/5. This means that the hawk can see from 20 feet what most people can see from 5 feet. (Scientific American, April 2001, page 24)


Mice


Can hear frequencies between 1,000 and 100,000 Hz. By comparison, we humans can hear frequencies between 20 and 20,000 Hz.


Mosquito

Attracted to host by human body odor ( especially the foot odor), carbon dioxide, body heat and body humidity.


Octopus


Retina contains 20 million photoreceptors.
The eye has a flicker fusion frequency of 70/sec in bright light.
The pupil of the eye is rectangular.




Penguin


Has a flat cornea that allows for clear vision underwater. Penguins can also see into the ultraviolet range of the electromagnetic spectrum.


Pig


Tongue contains 15,000 taste buds. For comparison, the human tongue has 9,000 taste buds.


Pigeon


With eyes mounted laterally on their heads, pigeons can view 340 degrees...everywhere except in back of their heads.
Can detect sounds as low as 0.1 Hz.


Rabbit


Tongue contains 17,000 taste buds.


Rat


Has hearing range between 1,000 and 90,000 Hz.


Seahorse


Each eye can move independently.


Scorpion


Can detect air moving at only 0.072 km/hr with special hairs on its pincers.
Can have as many as 12 eyes.


Shark


Has specialized electrosensing receptors with thresholds as low as 0.005 uV/cm. These receptors may be used to locate prey. The dogfish can detect a flounder that is buried under the sand and emitting 4 uAmp of current.
Some sharks can detect fish extracts as concentrations lower than one part in 10 billion.
Some sharks sense light directly through the skull by the pineal body.


Snakes


The tongue of snakes has no taste buds. Instead, the tongue is used to bring smells and tastes into the mouth. Smells and tastes are then detected in two pits, called "Jacobson's organs", on the roof of their mouths. Receptors in the pits then transmit smell and taste information to the brain.
Snakes have no external ears. Therefore, they do not hear the music of a "snake charmer". Instead, they are probably responding to the movements of the snake charmer and the flute. However, sound waves may travel through bones in their heads to the middle ear.
Snakes have no moveable eyelids. Instead, they have a clear, scale-like membrane covering the eye.


Spider
Many spiders have eight eyes.

Priyanka
12-27-2004, 05:11 AM
Ants

Can detect small movement through 5 cm of earth.
Can see polarized light.

I think this is wrong. 'cuz I am sure that they can only smell, but can't hear or see.


Cat

Has hearing range between 100 and 60,000 Hz.
Olfactory membrane about 14 sq. cm. For comparison, humans have an olfactory membrane of about 4 sq. cm.

What is Olfactory membrane? Can anybody please tell me? I forgot! :oops:

goodcomplanboy
12-27-2004, 05:21 AM
Jaggy you left one special animal

Homosapiens/Human Beings - has got brains to find out that all the above animals have special senses :ahha:

Priyanka
12-27-2004, 05:25 AM
Jaggy you left one special animal

Homosapiens/Human Beings - has got brains to find out that all the above animals have special senses :ahha:

thamaasu thamaasu! :lol:

jaggy4u
12-27-2004, 06:46 AM
Jaggy you left one special animal

Homosapiens/Human Beings - has got brains to find out that all the above animals have special senses


Topic peru Animal senses ithula ethukku Homosapiens varanum :D
namma GCB, angha comparison pottathula irunthu ore confusion, tension ;)
i guess as lot of ppl GCB too couldnt identify tht 6 differences... :ahha:

Bluelotus
12-27-2004, 11:38 PM
because Homo sapiens are part of the Animal Kingdom too :wink:

olfactory is the sense of smell

:b: amazing stuff Jaggy

goodcomplanboy
12-28-2004, 08:45 PM
Jaggy you left one special animal

Homosapiens/Human Beings - has got brains to find out that all the above animals have special senses


Topic peru Animal senses ithula ethukku Homosapiens varanum :D
namma GCB, angha comparison pottathula irunthu ore confusion, tension ;)
i guess as lot of ppl GCB too couldnt identify tht 6 differences... :ahha:

Looks like you have'nt learnt your basics clearly jaggy :lol: :lol:

Ithule comparison vera podureenga :sm12: :sm12:

Ethu entha group'ne theriyale ungalukku :sm12: neenga podura "6 difference" and "compare/contrast" ozhungaava irukka poguthu :sm12: :sm12: :sm12:

jaggy4u
12-28-2004, 09:02 PM
naan manusana manusanaa madikkaren, ingha sila peru mirugama ninaikkirangha, comparison oda effect thaan therinchuduchey... :D paavam aana :ahha:

goodcomplanboy
12-29-2004, 09:41 PM
naan manusana manusanaa madikkaren, ingha sila peru mirugama ninaikkirangha, comparison oda effect thaan therinchuduchey... :D paavam aana :ahha:

marubadiyum marubadiyum thappu panreengale Jaggy. Poi ozhunga zoology padichuttu vaanga :ahha:

jaggy4u
12-29-2004, 09:58 PM
BOTONY & ZOOLOGY grp thaan naan +2 la...appove lab experiement kku frog aa vettinom full marks kuduthaangho, so engha comparison correct aa irukkum GCB....

goodcomplanboy
12-30-2004, 02:09 AM
BOTONY & ZOOLOGY grp thaan naan +2 la...appove lab experiement kku frog aa vettinom full marks kuduthaangho, so engha comparison correct aa irukkum GCB....

athu BOTANY :sm12: :sm12: :sm12: BOTONY ille, ennatha teacher correct pannangalo :sm12:

jaggy4u
12-30-2004, 02:42 AM
oh A miss aa yiducha...teacher olungha correct panninanghala theriathu but nijama naan teacher aa correct pannala... :wink:
but enakku inthaa biology oru pidikkathaa subject, entrance exam appo morning enthrichu naan biology exam kku pogalennu sonnen..vittula innum thittu viluguthu enakku... :oops:
but ithunaala makeup maami pathy naan potta kanippu thappaguthu...maami waste thaan :yes: