The talent system is designed to allow you to customize your character by giving you new abilities or enhances your old ones. Every time you level up you receive a talent point which can then be used to buy a new ability in one of the three talent trees. Beast Mastery, Marksmanship, and Survival. Each tree is broken into tiers stacked on top of each other. In order to put points into tier two of a tree you must have first spent at least five points in that tree. In order to put points in tier three you must spend at least ten points. Also, some talents require that before you spend point in that talent you have to spend points in another, usually in a lower tier.
All of this is important because you will only have a maximum of 61 points to spend and must choose carefully which talents you want to invest in. The most powerful ones are lowest down in the trees because of their requirements and prerequisites. But this also means you will be mostly limited to that one trees specialty and it will severally influence and limit your play style. Since some talents are not very worthwhile or even worthless, talent builds were developed to make sure that your sixty points are spent as efficiently as possible.

Beast Mastery
Improved Aspect of the Hawk
Description:
While Aspect of the hawk is active, all normal ranged attacks have a 10% chance of increasing ranged attack speed by a percentage
Ranks:
Rank 1- 3%
Rank 2- 6%
Rank 3- 9%
Rank 4- 12%
Rank 5- 15%
Usefulness:

Commentary:

This is good for almost any build that focuses on ranged damage. It helps boost your DPS consistently and you can reapply it while the effect is up. Since it is at the top of the BM tree nearly every build can use it if they have the points to spare.

Endurance Training
Description:
Increases your pets health by a percentage and your own health by a percentage.
Ranks:
Rank 1- Pets health 2%, Your health 1%
Rank 2- Pets health by 4%, Your health 2%
Rank 3- Pets health 6%, Your health 3%
Rank 4- Pets health 8%, Your health 4%
Rank 5- Pets health 10%, Your health 5%
Usefulness:

Commentary:

This is a rather small boost but is nice for those who want their pet to tank or need some extra HP themselves. Keep in mind that for every 1000 HP your pet gets it will only get an extra 100 and you and extra 50. If you won't be having your pet do a lot of tanking this probably isn't worth many points.

Focused Fire
Description:
While your pet is alive all damage you cause is increased by a percent and the critical strike chance of your Kill Command is increased by a percentage.
Ranks:
Rank 1- Damage increased by 1%, Kill Command crit increased by 10%
Rank 1- Damage increased by 2%, Kill Command crit increased by 20%
Usefulness:

Commentary:
The damage increase is nice for being so low in the tree, even if it is small. The kill command crit increase is also very nice, especially if you are speced properly with Go for the Throat and have lots of crit gear.

Improved aspect of the Monkey
Description:
Increases the Dodge bonus of your Aspect of the monkey by a percentage
Ranks:
Rank 1- 2% increase
Rank 2- 4% increase
Rank 3- 6% increase
Usefulness:

Commentary:
Aspect of the monkey is very situational. You usually only use it if you are taming a new pet or PVPing with a survivalist spec. If you are interested in buffing up your pet you probably shouldn't put points in this.

Thick Hide
Description:
Increases your pets armor by a percentage and your own armor by a percentage.
Ranks:
Rank 1- Pet armor 7%, Your Armor 4%
Rank 1- Pet armor 14%, Your Armor 7%
Rank 1- Pet armor 20%, Your Armor 10%
Usefulness:

Commentary:
This, like Endurance Training, is designed for those who want to increase your pets survivability. This is really useful for tanking pets since they have higher armor and the extra armor you get isn't bad either.

Improved Revive Pet
Description:
Your Revive Pet's cast time and mana cost is reduced and your pet returns with extra health.
Ranks:
Rank 1- Cast time reduced by 3 seconds, mana cost reduced by 20% and pet returns with 15% extra health.
Rank 1- Cast time reduced by 6 seconds, mana cost reduced by 40% and pet returns with 30% extra health.
Usefulness:

Commentary:

Ideally your pet shouldn't be dieing very often. And when it does you will usually be in a situation where you will have the time and mana to rez them without worry. The exception to this is in situations where your pet will die very often like PVP or raids. In these cases you would want your pet to get back up more quickly and the mana reduction is nice since Revive Pet is so mana intensive.

Pathfinding
Description:
Increases the speed bonus of your Aspect of the Cheetah and Aspect of the Pack by a percentage.
Ranks:
Rank 1- 4% increase
Rank 2- 8% increase
Usefulness:

Commentary:
It is dangerous to use Aspect of the Cheetah and Pack in combat because of the stun effect so this is only useful for those who plan to do a lot of traveling. The speed bonus is nice if you are impatient but there are better talents in this tier.

Bestial Swiftness
Description:
Increases the outdoor movement speed of your pet.
Ranks:
30% speed increase.
Usefulness:

Commentary:
This is pretty much a must have for your pet. Keeping him in melee range can be hard when your opponent if fleeing in fear or running away in PVP. It also helps them keep up when you are riding on a mount so they won't get out of range and despawn. And it is very nice for getting your pet into combat so you can start shooting sooner.

Unleashed Fury
Description:
Increases your pets damage by a percent
Ranks:
Rank 1- 4% damage increase
Rank 2- 8% damage increase
Rank 3- 12% damage increase
Rank 4- 16% damage increase
Rank 5- 20% damage increase
Usefulness:

Commentary:
This is where the beast master tree starts to get good. If you are focused on improving your pet this is a must have. When coupled with a high DPS pet like a cat or ravager it is lethal.

Improved Mend Pet
Description:
Reduces the mana cost of your Mend Pet ability and gives it a chance to cure one curse, disease, magic or poison effect each tick.
Ranks:
Rank 1- 10% mana cost reduction, 25% to cleanse a debuff
Rank 1- 20% mana cost reduction, 50% to cleanse a debuff
Usefulness:

Commentary:
This is a all around useful talent to take. The mana cost is nice, but the real strength is in it's cleanse effect. It renders nearly all DoTs and most CC against your pet useless. Since Mend Pet is no longer a channeled spell you can use it and forget it while it cleanses your pet.

Ferocity
Description:
Increases your pets critical strike chance.
Ranks:
Rank 1- 2% increase
Rank 2- 4% increase
Rank 3- 6% increase
Rank 4- 8% increase
Rank 5- 10% increase
Usefulness:

Commentary:
This is the next step up from Unleashed Fury. If you want your pet to be a damage monster you need five points in this. Especially if you want to get Frenzy.

Spirit Bond
Description:
While your pet is active, you and your pet will regenerate a percentage of your total health every 10 seconds.
Ranks:
Rank 1- 1% of your total health every 10 seconds
Rank 2- 2% of your total health every 10 seconds
Usefulness:

Commentary:
This can be useful while doing large amounts of grinding. But it doesn't cut down on as much downtime as you think. If you need to access the next tier you might want to put one point in this.

Intimidation
Description:
Your pets next melee attack intimidates the target, causing a large amount of threat and stunning them for 3 seconds.
Ranks:
One rank.
Usefulness:

Commentary:
This is a truly excellent talent. It can be used to taunt the enemy off of you but it's real strength lies in the stun. You can use it to keep an enemy from fleeing or interrupt a spell cast. It is worth going this deep into BM for this alone.

Bestial Discipline
Description:
Increases the Focus Regeneration of your pets by a percentage
Ranks:
Rank 1- 50% focus regeneration
Rank 2- 100% focus regeneration
Usefulness:

Commentary:
This is another talent that enhances your pet. With this you will be able to spam damage dealing abilities more often and have your pet growl more often. Since it's only two points you will definitely want it.

Animal Handler
Description:
Increases your speed while mounted and your pets chance to hit. Mounted speed increase does not stack with other effects.
Ranks:
Rank 1- 4% movement increase, 2% chance to hit.
Rank 2- 8% movement increase, 4% chance to hit.
Usefulness:

Commentary:
The mounted speed is nice but not really worth two points. The extra chance to hit is nice as well, but not as necessary as you think. Since you can use Frenzy to gain access to the next tier you should only put points in this if you really want to.

Frenzy
Description:
Gives your pet a chance to gain a 30% increase to its attack speed after dealing a critical strike.
Ranks:
Rank 1- 20% chance to increase attack speed.
Rank 2- 420% chance to increase attack speed.
Rank 3- 60% chance to increase attack speed.
Rank 4- 80% chance to increase attack speed.
Rank 5- 100% chance to increase attack speed.
Usefulness:

Commentary:

This is the last of the beast enhancement talents. The speed effect procs from all of your attacks including Kill command, and if you get a crit while the effect is still up it will reset the timer. The flurry is especially nice for slowing down a spell caster.

Ferocious Inspiration
Description:
When your pet scores a critical hit, all party members have their damage increased by a percentage
Ranks:
Rank 1- 1% damage increase
Rank 2- 2% damage increase
Rank 3- 3% damage increase
Usefulness:

Commentary:

This is obviously best used in a group setting. It is especially lethal when used with a wolfs Ferocious Howl ability. If your pet is buffed enough you can have this buff up almost all the time.

Bestial Wrath
Description:
Your pet causes 50% additional damage for 18 seconds. While enraged the beast does not feel pity or remorse or fear and cannot be stopped unless killed.
Ranks:
One rank
Usefulness:

Commentary:
With this your pet becomes unstoppable, literally. While under this effect your pet is immune to nearly every form of CC. It's greatest strength is in PVP against classes that can fear like warlocks. The extra damage boost is also great for finishing off a wounded or tough foe.

Catlike Reflexes
Description:
Increases your chance to dodge by a percentage and your pet's chance to dodge by a percentage
Ranks:
Rank 1- Increases your dodge by 1% and pets by 3%
Rank 2- increases your dodge by 2% and pets by 6%
Rank 3- increases your dodge by 3% and pets by 9%
Usefulness:

Commentary:
This is one of the few pet enhancement talents that focuses on tanks. The extra dodge is great for helping them avoid damage and building up their aggro. DPS pets can benefit from it as well to a lesser extent. The extra dodge for yourself though isn't very useful in my opinion, but it's a free bonus.

Serpents Swiftness
Description:
Increases ranged combat attack speed by percentage and your pets melee attack speed by a percentage.
Ranks:
Rank 1- Ranged and pets attack speed increased by 4%
Rank 2- Ranged and pets attack speed increased by 8%
Rank 3- Ranged and pets attack speed increased by 12%
Rank 4- Ranged and pets attack speed increased by 16%
Rank 5- Ranged and pets attack speed increased by 20%
Usefulness:

Commentary:

The benefit of this talent are two fold. It helps your ranged DPS, so you will be able to use a deep BM spec in groups. You need to be careful though since the increased speed may throw off your shot rotation. The extra attack speed bonus for your pet is also very good. This combined with Cobra Reflexes and the occasional Frenzy will make your pets attack speed incredibly fast. It is especially lethal against spell casters.

The Beast Within
Description:
When you pet is under the effects of Bestial Wrath you also go into a rage, causing 10% more damage and reducing mana costs of all abilities by 20% for 18 seconds. While enraged you do not feel pity, remorse or fear and you cannot be stopped unless killed.
Ranks:
One rank.
Usefulness:

Commentary:
When combined with Bestial Wrath you and your pet both become unstoppable killing machines. The usefulness of this is somewhat limited in PVE beyond the damage boost . But in PVP the immunity to CC makes this a godsend.