To use this mod it's required to install Origins (Fabric).

This mod modifies spider behavior so that they can be fed, leashed and have owners that they follow around and protect.

Nestweaver

Powerful arachnid matriarch. Carry the nest within, and let your children walk beside you as shield and shadow.

Climbing - You are able to climb up any kind of wall, not just ladders
Unwieldy - The way your hands are formed provide no way of holding a shield upright
Carnivore - You diet is restricted to meat, you can't eat vegetables
Fragility - You have two hearts less health
Master of Webs - You can freely more through and climb cobwebs, trap enemies and see anyone intruding your nest through vibrations in the web
Home - You spawn in a mineshaft
Eyes of the Deep - Your eyes are equipped to lurk in the shadows
Pest Control - You take additional damage to fire
Poison Immunity - You are immune to poison
Hatch - Use ability to hatch two spiderlings that will follow and protect you. Look after them, they are your blood
Spider Kinship - Spiders and Cave Spiders are not aggressive towards you, and you are able to feed them
Venomous Bite - Hitting an enemy with an empty hand will inflict poison and restore some of your hunger

Nestweaver Origin