Saint here, just compiling some info/experience/advice that was very useful in evolving a dire pet. My references were here and a helpful alliance member recommending a zone.

Nightfall PvE only Ether Prism 10 2 25 Elite Spell. Gain 0..2 Energy for each point of Energy you have (maximum 50 Energy). (Attrib: Energy Storage) Prophecies PvE only Predator's Pounce 5 5 Pet Attack. Your animal companion attempts a Predator's Pounce that deals +5..35 damage. If that attack hits, your animal companion gains 5..50 Health. (Attrib: Beast Mastery) Prophecies PvE only Feral Lunge 10 5 Pet Attack. Your animal companion attempts a Feral Lunge that deals +5..35 damage. If the attack strikes a foe who is attacking, that foe suffers from Bleeding for 5..25 seconds. (Attrib: Beast Mastery) Prophecies PvE only Brutal Strike 5 10 Pet Attack. Your animal companion attempts a Brutal Strike that deals +5..35 damage. If that attack strikes a foe whose Health is below 50%, that foe takes an additional +5..35 damage. (Attrib: Beast Mastery) Core PvE only Aura of Restoration 5 ¼ 10 Enchantment Spell. For 60 seconds, you are healed for 152..400% of the Energy cost each time you cast a Spell. (Attrib: Energy Storage) Eye of the North PvE only Great Dwarf Weapon 5 1 10 Weapon Spell. For 20 seconds, target other ally's weapon strikes for +10..20 damage and has a 20..40% chance to cause knock down. (Attrib: Deldrimor rank) Eye of the North PvE only Feral Aggression 20 15 Skill. For 5..20 seconds, your pet attacks 33% faster and deals 3..10 additional damage. (Attrib: Beast Mastery) Core PvE only Charm Animal 10 10 Skill. Charm target animal. Once charmed, your animal companion will travel with you whenever you have Charm Animal equipped. (Attrib: Beast Mastery)