~~~~~~~~~~~~~~~~~~~~~~~~~On Northrend All base classes except Death Knights Shamans and Warlocks use Hunter pets.
Death Knights have their Undead. The Ghoul pet is rescripted and buffed including his abilities.
Shamans have custom elementals and are pretty much the summoner class due to being able to have 4 pets active at same time. The HP Armor and DMG of Shamans summons are recoded to scale from his stats. See more info in our Discord
Warlocks have their Demons which are also their Base class Perk. Demons Spells and Talents as well as Warlock talents which affect them are customized and buffed. Demons scaling calculations are recoded.