actually Nintendo has no plans for making a Nintendo 3DS.
Yes, the 3DS has backwards compatibility to DS and DSi games.
no
As of February 2014, there are 7 versions of the DS. DS and DS lite DSi and DSi XL 3DS, 3DS XL and 2DS
The DS lite is almost exactly the same size as the 3DS.
Yes it is a Smaller Version of the original Nintendo DS the only other DS that is a totally new ds is the 3ds although Dsi supports dsi titles that the original and lite versions do not but the 3ds supports all of them. You can also play ds Games on a 3ds but you cannot play gameboy advanced games on a 3ds whereas on normal or lite ds you can play Game Boy advanced games.
No, the Nintendo DS lite cannot play 3DS games.
From what I know, no. The 3DS games have a something on the game card that doesn't let you put it in on other DS systems. To play Animal Crossing 3DS, you would need to buy a 3DS.
Yes It works on the DS Lite, DSi, and 3DS.
No. The DS range goes 'DS', 'DS lite', 'DSi', 'DSi XL', and then there 3DS.
no
There are two main types of Nintendo DS devices: the original DS and the DS Lite. The original DS was followed by the DSi, DSi XL, and the 3DS family, which includes the 3DS, 3DS XL, 2DS, New 3DS, New 3DS XL, and New 2DS XL.
There are several types of Nintendo DS systems ranging from the Nintendo DS, Nintendo DS Lite, Nintendo DSi, and Nintendo DSi XL. The newest version of the Nintendo DS is the Nintendo 3DS and Nintendo 3DS XL.