What does altrician mean when referring to young mammals?

Altricial refers to young mammals born in an underdeveloped state and completely reliant on their parents for survival. Altricial mammals are typically tiny, blind, and immobile at birth, and they require constant care and protection from their parents. They are born with their eyes closed and their bodies are covered with a thin layer of fur. Some examples of altricial mammals include newborn human infants, kittens, puppies, and rabbits. In contrast to altricial young, precocial young mammals are born in a relatively well-developed state and can move around and feed themselves soon after birth.