Chao World Glitches (by Barbra B.B) For SA2B:In the Normal chao Garden,you get, go to the bottom of the 1 rock to the very left of the waterfall,(you have to be Sonic or Shadow)and keep on double jumping, and soon you will be just floating, and when you get back,all your chao will be underground!!!
In the Dark Garden, there is a fence (Next to the tree with the cage). Put the chao in front of the fence. It will drown under the garden. All you will be able to see is its emotion-ball (the dot on its head). If you want them to stop drowning, pick them up.
In the Dark Garden, you can jump on the cage that's on one of the trees. You can put your chao in it,though the chao will usually fall through.It takes practice to get the chao to stay in the cage.However,if you leave the garden,the chao will not be in the cage anymore. (note from the One and Only World's Greatest Drawer: Very rarely does this actually work. Generally the chao falls through the bars of the cage, but I have had it work once or twice for about 3-5 seconds)

How to get certain types of chao (by Rhiannon the Chao Master and The One and Only World's Greatest Drawer)
Shadow chao: Hatch a normal chao (the blue and yellow ones) in the Dark Garden; don't give it any animals or dark fruits, and care for it with a dark character (it doesn't HAVE to be Shadow,but I like to use him anyways).Basically you should give the chao green chaos drives(I recommend you do this at least until level 20,though I have gotten a Shadow chao that was only level 12).
Rouge Chao: Hatch a Normal Chao or a white chao in the Dark Garden, and care for it with a dark character (not necessarily Rouge) and give it purple drives so it becomes a Dark/flying chao. Then give it green chaos drives. I don't know why you do, you just do. Whatever you do, don't, don't, DON'T give it one of those bats. That will only make it lose its legs.
I've heard a rumor that you can get Sonic Chao,though I have made a hero speed chao and it is not a Sonic Chao.
Nights Chao-There are two ways to make one. The World's Greatest Drawer told me you can make one using a Shiny Purple Chao and raise it as a dark-flying type.If you can't get a Shiny Purple Egg,I suggest you use the cheap(er) way and make a normal chao a dark-flying chao using purple chaos drives.
Black Doom Chao-This chao wasn't intended to look like Black Doom,but it does bear an eerie resemblance to him nonetheless. I have yet to confirm this, but I've heard you make a Dark-Flying Chao and then give it red cores. It will evolve, the head-spikes straighten out a little, and the tips turn red.

Animal Chao (by the One And Only World's Greatest Drawer)
You know how there are various animals hidden in the stages? You can make your chao look like a certain type of animal if you use the right combinations. Here are some combinations I found that worked:
Bat Chao-Raise a Purple Chao (a shiny purple Chao will work, too) to be a Dark Chao (I've heard this works well with a Dark-Flying Chao, but that's optional). Then give it a bat so it'll lose its legs.
Ghost Chao-This one isn't too hard. You have to raise a White Chao to be a Dark Chao and then give it a bat. It will then lose its legs.
Bear Chao- This one requires Sonic Adventure DX. You give a Lime Chao all the bear parts. Keep its alignment Normal.
Boar Chao-I still haven't figured out how to get these yet.
Cheetah Chao- Give a Yellow Chao all the cheetah parts. Keep its alignment Normal.
Dragon Chao-These are actually pretty cool, from what I've heard. You give a Pink or Shiny Pink Chao all the dragon parts. I've heard this also looks cool with a Hero-Flying Chao or a regular Hero Chao.
Ghost Chao-This one isn't too hard. It's not an official type of Chao, but it's a cool combination I came up with. You have to raise a White Chao to be a Dark Chao and then give it a bat. It will then lose its legs.
Gorilla Chao-Give a Blue Chao all the Gorilla parts and have it grow up as a Normal Chao.
Macaw Chao-Give a Red Chao all the Macaw parts and have it grow up as a Normal Chao or a Hero-Flying Chao.
Moth Chao-This isn't an official type, either. All you have to do is make a Brown Chao develop into a Hero-Flying type.
Otter Chao-I still don't know quite how to get this kind.
Peacock Chao-Give a Blue Chao all the peacock parts and make it a Hero-Flying type.
Penguin Chao-Give a Blue Chao all the penguin parts and have it grow up as a Normal Chao.
Phoenix Chao-This is one of the harder Chao to get. Still, it can be done and it is TOTALLY worth the effort. You hatch a golden Chao (you can also use a yellow or orange Chao if you want to spare your Rings) and give it phoenixes (an easy place to find these is in Mission Street, though you'll need to be able to break iron boxes). Then (this is optional; it only makes it look even cooler) give it purple chaos drives and make it into a Hero Chao.
Rabbit Chao-There are two ways of making these, since you can get them in either yellow or pink. To get a yellow Rabbit Chao, you give an adult Yellow Chao rabbits until it gets all the parts. For a Pink Rabbit Chao, you hatch a pink Chao and give it all the rabbit parts as a baby. When it grows up, the rabbit parts become pink. I learned this the hard way.
Raccoon Chao-Give a Blue Chao all the raccoon parts and have it grow up as a Normal Chao.
Seal Chao-Give a White Chao or an Aqua Chao all the Seal parts and have it grow up as a Normal Chao.
Sheep Chao-I'm not sure how to get this kind.
Skunk Chao-Give a Red Chao or a Magenta Chao (do not use a Black or White Chao-the skunk parts are reddish pink even though the skunk appears black) all the skunk parts and raise it to be a Normal Chao.
Swallow Chao-This kind requires Sonic Adventure DX. You give a Blue Chao all the swallow parts and have it grow up into a Normal Chao (or if you're willing to show the extra effort, port it off to Sonic Adventure 2 Battle and make it a Hero-Flying Chao)
Swamp Monster Chao-I've heard a couple rumors about Swamp Monster Chao, but I have yet to find any proof they actually exist and can be made.
Tiger Chao-There is an easy way and a hard way to get a Tiger Chao. The easy involves giving an Orange Chao all the tiger parts and having it grow up as a Normal Chao. The hard way (which produces a very different and slightly cooler Tiger Chao) involves making a Chao become a Dark Power Chao (this can be done with red Chaos Drives). Then give it all the tiger parts.
Unicorn Chao- Give a Pink Chao or a Shiny Pink Chao all the unicorn parts and evolve it into either a Hero Speed Chao or a Hero Chao.
Vulture Chao- Give a Purple Chao all the vulture parts and evolve it as a Normal Chao.

Chao Myth Busters (by The One And Only World's Greatest Drawer with help from Rhiannon the Chao Master and Barbra B.B) Here are some things that aren't true about Chao, regardless of what you've heard.Me and Rhiannon actually went through the trouble of confirming these.
-If you put a hero chao in the dark garden or vice versa for a prolonged peroid of time,it won't die, but it won't be too happy.
-There is no Chaos Garden;I got all 180 emblems and unlocked everything.
-You CAN bring up a hero chao in a dark garden or vice-versa without Hero or Dark fruits,but it is very hard.
-In Sonic Adventure DX,it is possible to make a hero or a dark chao without using hero or dark fruits,but it is very hard and can take many tries.