The family Sericifexia, is a family of tenuepods that evolved a specialized organ that can produce silk, derived from pores on the back. Another thing that sericifexians evolved are segmented shells and active respiration, which allows them to grow larger and avoid their body collapsing. The long upper fins presence in their tenuepod ancestors are completely vestigial, as it serves no purpose due to most of the species being ground mobs.

Spiders are another common predators found in forests and open environments. Unlike wolves, they are not pack hunters, and are actually solitary mobs that hunt alone at night, being nocturnal mobs. This is due to the fact that spiders often have to compete with wolves to hunt, and some spiders may die from starvation, so these mobs' eyes are adapted specifically for the dark, evolving lens that allows them to see better at night, and developing dark skins to blend in the dark. A fun little fact about these mobs, is that when light gets in contact with their lens, it reflects the light and cause the eyes to appear red. Spiders usually hunt small tenuepods to medium sized mobs, but never tried to hunt mobs that are larger or bigger than it so it can avoid getting itself in danger. Rather than being hunting claws, the claws on their feet is used for climbing surfaces and reach specific areas that larger mobs can't reach, which they will build their nests at with their silk, weaving it in specific patterns similar to webs of spiders on earth, which is why these nests are nicknamed "Cobwebs". At daytime, spiders still roam around their habitat. However, they do not hunt nor show any sign of aggression towards any being, and they are actually more shy at daytimes, caused by the sunlight that impairs their vision.

Minecraft: Like a spider