if you are talking about nulgath's betrayal blades, you can get them from different quests from nulgath, who is in tercessuinotlim.
pet shoppe
oicu821
you need to have necromancer class
You can get it if you are member. Some of them is in the pet shop in battleon town.
Adventure Quest - Aria's Shop on the left side Adventure Quest Worlds - Aria's Shop on the left (Membership only)
you can get the vorpal bunny armour of the vorpal bunny pet
There is no enhancements for pets. There was once and Adventurer's Pet Enhancement but that is now rare.
u need to click the 8th betrayal blade ,sword of nulgath, overfiend battle pet, or the pheonix battle pet to find the quest...
There is no non member pet but you can buy parrot cape and that looks like pet but its cape
She is located in Aria's Pet Shop in Battleon town (/join battleontown), to the left.
you can not get this pet any more it was purchased from pet shoppe in 2008 during frostvale
you cant get one at all but if you meen the dark wolf you get it from the willow creek quests