Gosh this thread got busy again! Various comments on what has been said...

For those who have commented on having trouble getting enough males or females... I believe it is random. I've been lucky to get pretty close to a 50/50 ratio. So just keep trying!

Epona, originally most dragon species only came as one sex, but now they all come as both, except pink & purple which are still only female.

As Jessika said, most dragons will breed with most other dragons. The offspring will be one of the 2 parent species. 2 headeds only breed with other 2 headeds. Paper, dinos, and the chicken don't breed at all. Christmas can breed, but will not produce a christmas, so it will be the other parent species.

Freezing hatchlings is like Schlyne said, to prevent the aging of a hatchling. From something I read on the Dragon Cave forums, you can freeze in either hatchling stage, but it won't stay in the younger stage. It will grow its wings (or whatever that species does), then stay frozen. So what freezing really does is prevents it from becoming an adult.

Also, for those of you still having trouble with eggs getting soft from too many clicks & views... I have recently been waiting about a day after I get an egg before I put it in my signature, based on a tip on the Dragon Cave forums. I don't think I've had a single soft egg or sick hatchling since I started doing that. Also it doesn't even seem to slow down how fast they hatch; it is still around 3-4 days from when I got the egg.

I'll get around to saying more about the secret dragons later, but what others have said so far pretty much matches what I know.