Ah, yes, the "Egg Chao". A unofficial Chao that is not considered real. Sorry to break it to you, but there is no possible way of getting a "Egg Chao". I presume you were playing Sonic Rivals 2 when you discovered this, yes?
To Get a Pink or Purple Chao Egg get 94 Emblems
Mate a dark chao with a red chao and hope for an egg.
well,make a chao incarnate(i hope you know what that means!)and he will grow flowers around him...put a chao in front of him and they MIGHT kiss!then an egg appears in the middle.
You would breed a yellow chao and blue chao. Or you could buy a green chao egg from the black market.
it is an evolution egg, where a child stage Chao is turning into an adult Chao
Try giving the chao a skull dog and then give it the top of the egg and let it evolve.
You cant.your Chao is not able to die either
There is no "egg chao" in SAB2, but you can put eggs on an already born chaos. You chao has to be somewhat smart, and you have to be very persistent, but if you keep handing an eggshell or unhatched egg (murder!) to a chao, it will eventually figure out it can put it on it's head, which it will do itself. This effect is permanent and the egg cannot be switched out afterwards, so make sure the egg/eggshell given is a cool one!
gold egg
You can get a Transparent Chao by breeding a Shiny Chao with a Jewel Chao. When you get the egg, there is a possibility that when you hatch it, it will be either an Invisible, Transparent, or a Two-Tone Chao. If it's not a Transparent Chao, then you can always try again. Hope I helped!
You can't without hacking
when two chao have a circle of flowers put one of the chao on the other chaos flowers in about 5-10 seconds some music will come then your chao will lay a egg.