One of Cynder's poison breath attacks will be the Poison Bomb. It acts like Spyro's ice attack in ANB and TEN, but uses poison instead. Also, in the trailer it shows the ice breath. I am not sure if it will be like that, but I will put it in anyway.

We almost have all the breaths guys!

EDIT: I just looked through the trailer and found a few more. And I am not going to post fury attacks, since there is alot of speculation on what the furies will be like in this game.

From the videos of gameplay and the trailer of DotD, I am going to list all the breaths that I can find. Please post if you found another one, but please don't say what you want or what you think will come without evidence:

Spyro:

Fire:

Fire breath (like in ANB and TEN)
Comet Dash (like in TEN)

Earth:

Earth bomb (Spyro's Earth short-range attack)

Earth ball (Spyro curls into a ball of green energy and rolls around)

Ice:

Snow Storm (Unknown)

Ice arrow (like in ANB)

Lightning:

Fury (Goes inside electric ball. Like in TEN and ANB...I think.)

Cynder:

Poison:

Poison breath (like fire breath, but green poison)

Fear:

Fear blast? (like in ANB with earth blast, might be shadow)

Wind:

Fury/Tornado (like in ANB, but without the bomb)

Shadow:

Shadow blast? (like in ANB with earth blast, might be fear)

Nice job! Though, I added a few things.

Spyro:

Fire:

Fire breath (like in ANB and TEN)
Comet Dash (like in TEN)

Earth:

Earth ball (Spyro curls into a ball of green energy and rolls around)
Earth burst (A very small explosion shooting small energy bursts around spyro)

Ice:

Ice arrow (like in ANB)
Ice breath (like fire breath, but freezes the enemy)

Lightning:

Lightning breath (like in ANB)

Cynder:

Poison:

Poison breath (like fire breath, but green poison)
Poison bomb (Ice bomb from ANB/TEN, but with poison)

Fear:

Fear blast? (like in ANB with earth blast, might be shadow)

Wind:

Tornado (Cynder spins around quickly creating a tornado)

Shadow:

Shadow blast? (like in ANB with earth blast, might be fear)