The Dwarven Armored Mudcrab is a pet that can be purchased from Calcelmo in Understone Keep. He originally found it while excavating the ruins of Nchuand-Zel. Its initial location is Calcelmo’s laboratory in Understone Keep.
The crab is essential, and will not engage in combat. Its main function is to carry items, and it has a carry weight of 20 and it will follow you even if you already have another pet following you. You can instruct it to wait at a city, wait at its current location, wait at your house, or to carry items. It can also be summoned using a teleportation spell. The mudcrab cannot be detected by Detect Dead or Detect Life.
If following you, it will occasionally give you leveled clutter, which could be an ore, a Dwarven clutter item, a gem, a soul gem, or gold.
Travel to the city of Markarth and make your way down to the Understone Keep and speak to Calcelmo.
Calcelmo is an elderly Altmer Conjurer who can be found in Understone Keep where his nephew, Aicantar, helps him in the laboratory. He has a great interest in the Dwemer and is the author of many scholarly works about them
Talk to Calcelmo and see what he has for sale. In Calcelmo Books inventory you will find the Ownership Deed – Mudcrab. Purchase the mudcrab from Calcelmo and he will include a Spell Tome called Teleport Pet Mudcrab.
Speak with your new pet the Dwarven armored Mudcrab and you can commend him to follow you, carry something, or wait for me at home or city.
The Teleport Pet: Dwarven Mudcrab spell can be located under the Alteration tab. You can use the spell tome to summon him to your location at anytime.
From time to time he may also dig up something useful or valuable.
Once you’ve installed the Dwarven Armored Mudcrab Creation, you will receive this quest and a notice of sale, which directs you to talk to Calcelmo in Understone Keep.
Travel to Understone Keep in Markarth and meet Calcelmo in the ruins section of the keep. From him, you’ll be able to purchase the ownership deed. Once you’ve done so, you’ll find the Dwarven Armored Mudcrab beside the arcane enchanter. You’ll also receive a spell tome that teaches you a spell to teleport the mudcrab to you.
The mudcrab serves as an animal follower, with the added ability to carry items and allow you to send it to specific locations.