i heard that a chameleon, even if its blind, can still change its colour to blend in with its background. How?

Answer 1

It's possible through the combined use of his memory and other senses. For example, he remembers what green leaves look like and feel like, so when his sense of touch indicates he's on leaves that feel like green ones, he changes his color to green. When leaves change color, their texture changes too. Cameleons can sense these changes--not only through their keen sense of touch, but also though other senses such as smell, etc.

Those born blind are taught by their parents what color to change based on what they feel, smell, etc.

You might be in awe of all of this, but it's quite natural, and humans have similar ability. Not to change their color, but to sense what color something might be based on feel and smell. Take for example a banana. If it feels very firm and has a somewhat raw smell to it, you can bet it's probably green. If it's texture feels less firm, it's color is probably a mixture of green and yellow. A little less firm, and it's probably completely yellow. Really soft and smelly, it's probably a combination of yellow and black. Dry feeling and really smelly, it's color is probably black. Humans with vision might find this a little difficult to do when initially blindfolded, but blind people can probably tell you the color of a banana by touch and smell because they've learned how to pretty accurately determine things through senses other than vision.

Answer 2

The pores of a Chameleons skin have different coloured cells which, by changing which ones are the most visible the chameleon can change its colour. Its ultra amazingly sensitive eyesight must detect the colours as both eyes work independently.

Answer 3

My theory is that it's to do with vibration, not visual stimuli. We now know that everything has a different vibration, or rather the molecules that make up every different thing vibrate at a different rate or frequency, perhaps colours vibrate at a different frequency and the chameleon has the ability to match it. In fact not just the ability but a reflex reaction to said frequencies.

Answer 4

It is a popular misconception that the chameleon changes its colour to match that of the background.
Rather, they have a basic pattern that provides camouflage, and the colour changes are due to heat, light, and can also reflect their mood.

Answer 5

Lizards have a parietal eye on the top of the head that detects changes in light ans stimulates color change. The vision eyes are not involved

Answer 6

They don't need to see, as they don't change color to match their background. They change instead with the intensity of light, temperature, and emotions, so sight wouldn't be needed. Color-changing isn't a conscious choice that they make, it's a reaction.

Answer 7

the color change is a reflex that occurs when the chameleon feels scared or insecure. its just like humans sweating

Answer 8

Sixth sense

Answer 9

ask the question again!