The second type of fixed clam can cement its shell to a hard surface like some oysters or extrude
a tough fibrous material (byssal thread) that attaches it to a hard surface.
Not exact matches
Bamboo is
tough and
fibrous and panda digestive systems are not well - designed to break down this
material, though it is the primary source of nutrition in their diet.
The teeth wear down naturally when the rabbit eats
tough fibrous plant
material.