Initially, it is important to note that Feral DPS is based on a list of priority instead of a fixed rotation. With practice, it will get easier.
To start off..
Glyph of Savage Roar
Glyph of Shred
Glyph of Berserk (My own personal preference)
Though you may prefer to go with Glyph Of Rip
I personally prefer Glyph of Berserk because I'd rather have a higher burst. Nevertheless, that might be favorable specifically in Icecrown Citadel 25 heroic. In comparison, you may also choose to use Glyph Of Rip, which could be better for other raids.
To explain this further more, in Icecrown Citadel 25 heroics, specifically, it is probable to say that a Feral Druid will have enough time to use berserk twice. In similar cases as the one described, it is plausible to say that the damage dealt throughout a berserk burst can exceed the damage done by the additional seconds provided by Rip.
Minor Glyphs: Some suggestions
Glyph of Dash - It comes in handy
Glyph of Unburdened Rebirth - You deserve to be banned for 3 days if you couldn't revive someone in a fight because you did not have reagents

Glyph of the Wild
Glyph of Thorns
Should never be the case in WOTLK feral.
Agility
Increases a druid dodge chance, attack power, crit, and armor. It is preferential to stack Agility with low gears.
When to stack Agility?
When you have armor penetration, hit rating, and expertise capped.
Attack Power
Increases the druid bleeds damage, and melee damage.
Critical Strike
76% - White Crit Cap (+ 24% Glancing Blows = 100%)
79.8% - Ferocious Bite Crit Cap (+ 25% Crit from Talent - 4.8% Crit Suppression = 100%)
You will have around 60-70% Crit unbuffed with decent gears in cat form.
Hit Rating
Cap is 8% Hit for 83 level targets. Utilize being an Alliance and throw a goat in your group for the addition 1% hit.
With 5% hit rating in TW - I only miss 2-5 times in a fight. I'd suggest 6-7% hit rating.
Expertise
You get around 10 expertise from Primal Precision Also you get expertise from legs in tier 10.
Expertise cap - 26
Haste
Although, as important it is to kitty's since most of our damage is based on melee damage. You still should never be stacking haste rating.
Armor penetration
When should you start stacking armor penetration? And is it better than agility?
Armor penetration reduces enemy armor increasing your physical damage, So Agility increases your AP which increases bleed damage. Since most of Feral damage is from melee attacks, Armor Penetration is better than Agility.
Generally speaking, you should start stacking armor penetration when you start gearing from Icecrown Citadel.
Over all, your stats priority should follow this Hit Rating>Armor Penetration>Expertise>Critical Strike
Gems and enchant
Meta: Relentless Earthsiege Diamond
Red: Fractured Cardinal Ruby/Delicate Cardinal Ruby
Blue: Nightmare Tear
Yellow: Rigid King's Amber/Accurate Ametrine/Glinting Ametrine
Head: Arcanum of Torment
Shoulders: Greater Inscription of the Axe
Back: +22 Agility
Chest: +10 All stats
Wrist: Greater Assault
Weapon: Berserking
Hands: +20 Agility / +20 hit (Low geared)
Legs: Icescale Leg Armor
Feet: +16 Agility / Icewalker (Low geared)
Professions
Overall, every profession has its benefits. My personal recommendation are Engineering and Tailoring. Mainly due to the haste boost provided by Hyperspeed Accelerators and +400 AP from Swordguard Embroidery.
Not to forget the entertainment of the parachute (Although, not much to stats, but a good utility especially for PvP).
Blacksmithing for an additional socket on both Hand and Wrist
Note: Engineering+Tailoring.
There is no fixed rotation for a Feral druid. But there's a list of priority
After applying Faerie Fire (Feral)
Savage Roar > Mangle > Rip > Rake > Shred > Ferocious Bite
Kitty DPS is NOT about spamming spells. You have to treat your energy like you treat your girlfriend, the less you pressure her, the more she gives you. Point is, calm and steady wins the race. That is exactly the point with Feral druids.
You need to keep your Savage Roar, Mangle, FF up at ALL times and reapply your dots when they're off (Completely) ASAP. So as you can conclude, your rotation is based on a set of PRIORITY, and there is no such a thing as 1234.
Savage Roar: Top priority
Mangle: Apply once every 1 minute. Never spam unless you can't get behind the boss.
Berserk: This is what gives the feral druids the highest burst in game. Never use it when you're below 60 energy. Squish in x2 FBs.
Tiger's Fury: Increases bleeds damage when applied during use. Also, it adds 60 energy when used because you are King Of The Jungle
Ferocious Bite: As you get better with utilizing energy, you might be able to squeeze some without worrying about losing bleeds. HINT: Use it at ~35 energy because it can drains up to 75 energy.
Clearcasting: When ever you get a clearcasting, use a shred. Note: FB Will still take energy.
Cower: Most useless cat spell. Causes no damage but lowers your threat. Again, useless.
I use Badkitty, because you know, it's a cool name.
I hope this helps
