Fire+Earth dragon. if it's flaming rock dragon, try Earth+Fire goodluck :)
We can not get a Poo Dragon by breeding water and dark in dargon city because of it rare hybrid, so try breeding blizzard and dark, water and venom, vampire or mud. It might take a few tries or alot of tries to get it. If you do not get it do not get dishearted try a few more times and try to make your own combinations with the dragon of that hybrid. You might also get a Pirate Dragon.
2days
To breed a crystal dragon.. You must breed a Coolfire dragon + a Soccer dragon. The levels of your dragons do not matter. Remember that this is a pretty rare dragon you're breeding so it may take you several tries to get him [took me 4 tries] Dont give up it may take a while. Btw, you will know if you're getting a crystal dragon or not by looking on how long it will take to finish breeding at your breeding mountain or your ultra breeding tree, (should say 1 day and 23 hours and 59 min) If you want the other dragons (legendary,mirror,wind) you can try breeding coolfire dragon with gummy dragon or coolfire with armadillo dragon Good luck :}
8 hours long does the gummy dragon takes to hatch on dragon city.
9/MIN
1 day 7 hours
Breed an ice dragon and a firebird dragon, it might take a few tries but you will get it eventually
A century dragon takes 10 hours to breed, or 8 hours if using the epic breeding island.
It takes 12 hours for them to breed.
To get a Flower Dragon in DragonVale without spending gems, you can try breeding dragons with the Plant and Fire elements (such as Moss Dragon and Scorch Dragon) in the Breeding Cave or island. Keep trying different combinations until you successfully breed a Flower Dragon. It may take a few attempts before you get the desired outcome.
To breed the Bronze Olympus dragon in DragonVale, you need to combine the elements of Earth, Lightning, Cold, and Light in the breeding cave or the epic breeding island. This dragon is a limited dragon, so it may only be available during specific events or times. Keep trying different combinations until you successfully breed the Bronze Olympus dragon.