Burrow Spiderling
Drops from Maexxna. The front legs of this spider are almost indestructable, allowing it to burrow into almost any surface. Beast type. The real coordinates for the cave entrance to Neltharion's Vault where you can find this spider is 44.6 72.4 in Highmountain.
The Burrow Spiderling is a Legion-era wild pet with reinforced front legs that you can capture in Highmountain or purchase from Maexxna in Naxxramas.
Guide awaiting review
Locate the spider in Highmountain
Travel to Highmountain and find Burrow Spiderling battle pets at 22.4, 42.7. Look for the critter versions of this spider in the area and clear nearby mobs to encourage them to spawn as capturable battle pets.
Capture the pet
Engage the Burrow Spiderling in battle and defeat it to add it to your pet collection. Note that the spider may occasionally throw up dust while active, making it harder to target.
Alternative: Purchase from vendor
If hunting proves difficult, visit Maexxna in Naxxramas to purchase a Burrow Spiderling directly instead.
