👉 Plectognathous, also known as a plectogynous, refers to a type of mammal that lacks a tail. These animals have no appendages for grasping or holding onto objects and rely on their sense of smell, hearing, and touch to navigate and interact with their environment. In the context of biology, plectognathous species are those that do not have any external sensory organs like eyes, ears, or nostrils, which means they cannot detect sounds or