Silkworm

Silkworm is a creature-related resource used in the construction and operation of the Cocoonery. It can be turned into Silkworm Cocoon, making it part of the production chain tied to silk-related progression.

Silkworms can also be increased in the Cocoonery, but there is no need to produce Silkworms themselves unless you want to expand the number of Cocooneries you are building. In normal use, they serve as a supporting resource rather than something that must be mass-produced on its own.