Bacteria 1 Bacterial hydrogel 1 Bacterial–material interaction 1 Biomechanics 1 Cell encapsulations Dynamic hydrogel 1 Engineered living material 1 Environmental impact 1 Hydrogels 1 Living organisms 1 Mammals 1 Material function 1 Material interactions 1 Stiffness 1 Stiffness matrix 1 Tunables 1 bacterial hydrogel 1 bacterial–materials interactions 1 cell encapsulation 1 dynamic hydrogel 1 engineered living material 1 matrix 1