I thought I would list some other class combo's beside Ranger to help you out with your pet.
Necromancer Pet Helpers
Well of Blood-When your pet dies don't cry, make a well and help out
other pets or warriors with some +5-6 health regen.
(I wouldn't bring Well of Power, has same health regen as Well of blood and pets have no energy anyways. Use a better elite for pets.)
Barbs-Hex spell that last 30 secs and adds damage with each physical hit. Good if team your in calls attacks.
Enfeebling Blood-Causes weakness to Target foe and all adjacent ones aas well. (you sacrifice 17% health). Many people don't think Weakness is a worth while condition, but it will give your pets and others longer tanking power because Monsters will be attacking for less damage.
Mark of Pain-Hex Spell that last 30 secs and deal shadow damage to all adjacent foes. Good for if monsters are grouped up, but beware Mark of Pain causes AOE damage and creatures will scamper and might go after team and not pets.
Plague Sending-If you happen to get a condition on you(one condtion at a time), send it back to the monsters and all adjacent ones as well and spike with Scavengers Strike.
Plague Signet-Same as Plague Sending, but send ALL conditions. This is an elite skill though. I would go with Plague Sending, but it's up to you
Shadow of Fear-Make Target foe and all adjacent ones as well attack slower for 20-39 seconds. Give pets longer staying power.
Spiteful Spirit-This is an elite skill and if your necro i'm pretty sure you know what this skill does. (Oh no not a couple months back though when I liked to use it and got laughed at for using it groups and never got in any groups for using it, but thats another story.)
Suffering- Negative 2 Health degen on Target and all adjacent, why not.
Death Skills-(I see Death+Beastmastery becoming very powerful)
Animate Bone Fiend, Bone Horror, Bone Minions-If your in a group with lots of pets.......prepare for lots of minions. Pets die quick and rez quick so there will be minions galore, but energy might be a problem. Soul Reaping might solve that though.
Consume Corpse-Need some extra Health or Energy Keep an eye out for when team mates pets die and yours to use it.
Death Nova-Damage and Poison for when your pet or others die......ouch.
Putrid Explosion-And you thought you would never have fun seeing your pet die. Blow him up and other dead pets for 100+ damage.
Soul Feast-If your running low on health just suck up a dead pet or two for some health.
Tainted Flesh-Cast this on all the pets and Warriors to put some degen on monsters,this is an elite skill
Well of Suffering Take use of a dead body and cause -5 degen with this well....woooooo
Warrior Pet Helpers
Furocious Strike (pet elite skill) allows for energy and adrenaline when your pet connects for this attack. Use this to allow for extra adrenaline for all Weapon attacks and energy for when you need it.
Use and Weapon attack that causes any type of condtion to spike with Scavenger's Strike
Disrupting Chop-Use this and Distrupting Lunge too just be flat out annoying.
"I WIll Avenge You" You all should now what this does and this build has angered the NAABM (National Association for the Advancement of Beast Masters)
[i]Final Thrust[i]-You deal 32 more damage and it is doubled if target's health is below 50. Combo with Brutal Strike for some very nice damage.
[i]Savage Slash[i]-Combo with Disrupting Lunge to be a pain again.
"Shields Up"-Be a pal give your pet and pet friends some armor.
"Victory is Mine"-Combo this with some condtions of your own and some pet condtions to gain some health and energy. Scavengers Strike would work well also with these moves. Elite Skill
"Watch Yourself-Be a Pal Give your pets some more armor.
Mesmer Pet Helpers
Fevered Dreams-Use this one target and then use some pet condtions to spread them out to th enemies. Combo with [i]Scavengers Strike for some more damage. This is an elite skill
Fragility Keep adding Condtions to add more damage, good combo with Scavenger's Strike
Phantom Pain-Nice degen at start then weakness, here is a little combo.
Phantom Pain, Fragility, Feral Lunge, Scavenger's Strike, weakness should kick in then Scavenger's again.
Echo Copy any one of your pet attacks and keep applying it. I would rather go R/Me for this for less energy for pet attacks, this is a elite
Epidemic-C'mon on now your pet worked so hard to put condtions on that one enemy, be a pal and give those condtions to the others as well.
Monk Pet Helpers
You monks use your own Healing and Protections skills they way you want. There is no real combo with this and pet skills besides you just healing and helping your pet to last longer.
Life Vicariously- Cast this on your pet on use Call of Haste to keep your health at a good level. I would suggest that your healing be high for +10 or more health for each attack your pet lands.
Smite Spells-Lots of Good ones here :)
Balthazaur's Aura-Good move to cast on pet while they are attacking, but causes AOE and monsters could come at you.
Balthazaur's Spirit-Maintain this on your pet for some extra energy.
Judge's Insight-Give your pet some Holy damage and some Armor Penatrion for a bit. Great for the undead.
Retribution-Keep this on your pet and make the enemy take damage for each time they attack him.
Shield of Judgement-Great Spell, cast this on your pet for knockdowns and damage for each time they attack your furry friend, or Scaley friend, or Feathery. Elite skill
Smite Hex-How dare them cast a hex on your pet...take it off and cause some damage to near by monsters.
Strength of Honor-Maintain this enchantment for your pet to hit for more damage.
Essence Bond-Use this on your pet to gain enrgy for damage your pet takes
Elementalist Pet Helpers
I didn't see any truely great combo's with Ele moves. Use Wards for extra protection for your pet, but try to avoid you getting hit. Also burn with fire magic and Scavenger's Strike, but burn doesn't last long so you might not get the combo off.
Those are some combo's you mix with your Pet besides Ranger moves. I'm sure there are more combo's and if there are please list them. I hope this helps all you Beast Masters out there.