By Newton (Sun Apr 11 2010):  skills by pet type and level

melee:

|| Tier 1:      
||  - Bulk1
||  - Dagger
||  - Thin blade
||  - Weapon breaker
||  - Conditioning 
||                  
|| Tier 2:          
||  - Bulk2
||  - Broad blade
||  - Ancient
||  - Double hit
||  - Endurance 
||               
|| Tier 3:       
||  - Bulk3
||  - Axe
||  - Bludgeon
||  - Ambidexterity
||  - Stun
||        
|| Tier 4: 
||  - Bulk4
||  - Hardiness 
||  - Eldritch touch 
||  - Critical strike 


----------------------

ranged:

|| Tier 1:  
||  - Bulk1
||  - Thunderstick
||  - Polearm
||  - Conditioning 
||                            
|| Tier 2:                    
||  - Bulk2  
||  - Crossbow  
||  - Whip  
||  - Endurance  
||            
|| Tier 3:    
||  - Bulk3   
||  - Sling   
||  - Bow     
||  - Double strike 
||                      
|| Tier 4:              
||  - Increased aim    
||  - Deftness       
||  - Chain strike  
||  - Deadeye       

-----------------------------

sorcerer: 

|| Tier 1:
||  - Bulk1  
||  - Staff  
||  - Rotting (disint)
||  - Harmful (harm)
||                  
|| Tier 2:          
||  - Acidic (acid)
||  - Toxic (poison)
||  - Mana channel
||  - Burning (fire)
||                  
|| Tier 3:          
||  - Bulk2
||  - Mana focus
||  - Electric (elec)
||  - Quick chant
||  - Freezing (cold)
||                   
|| Tier 4:                                    
||  - Harmful aura 
||  - Rapid chant 
||  - Acumen 

--------------------------------

healer:

|| Tier 1:   
||  - Bulk1  
||  - Staff  
||  - Undead  
||  - Nonflesh  
||              
|| Tier 2:      
||  - Insect    
||  - Animal    
||  - Fish      
||  - Mana channel
||                           
|| Tier 3:                   
||  - Bulk2         
||  - Plant         
||  - Mana focus
||  - Quick chant
||                               
|| Tier 4:                       
||  - Regenerative aura 
||  - Rapid chant
||  - Healing aura 
||  - Acumen