The Draconic Breath [Draconic] feat (Complete Arcane) allows a Sorcerer to spend a spell slot to use a breath weapon as a standard action. This is a supernatural ability and the damage and save DC is calculated based on the level of the spell slot spent.
The 7th-level Transmutation spell animate breath (Draconomicon, updated for Spell Compendium) creates a construct/elemental out of the user's breath weapon. Neither version explains directly whether or not the Draconic Breath feat counts as a valid breath weapon for this purpose, though the Draconomicon states:
Casting this spell is a standard action, which includes using your breath weapon.... it immediately takes animate form and attacks. It does not form as a cone or a line, and does not deal damage when it is used to cast this spell,
The Spell Compendium version says
For this spell to function, you must have a breath weapon, either as a supernatural ability or as the result of casting a spell such as dragon breath
Furthermore, both versions of animate breath define the range as "Personal" and the target as "You/Your breath weapon," without defining where the animated breath appears.
This leaves me with a couple of questions:
Can Draconic Breath be used with animate breath to create a construct or elemental?
Do you have to use an additional spell slot to activate Draconic Breath in addition to the one for Animate Breath, or do you use one (7th-level) spell slot for both?
If two spell slots must be used, is there a requirement or limitation on the spell slot used for Draconic Breath for Animated Breath to function?
If using the Spell Compendium version of Animate Breath (which doesn't base the construct's stats on the strength of the breath weapon), will using a low-level spell slot for Draconic Breath produce the same result as using a high-level spell slot?
If you have the Dragonheart Mage prestige class from Races of the Dragon, does its increased Draconic Breath damage dice affect the animated breath's statistics?
Can you spawn the animated breath anywhere in the area the regular breath weapon would have affected, or must it materialize adjacent to you, or somewhere else?
I'm sorry if the length of my post is off-putting, but I want complete information for the sake of my 3.5 Edition character build.