Each concept here is mapped to its prerequisites — the ideas you'd need first to understand it — all the way down to four foundations: Space, Time, Energy, Pattern. Click any prerequisite to drill down, or scroll for the chain graph.
A bark is a sound produced by a dog, leveraging its ability to make loud cries for communication or alarm, which is a fundamental aspect of its behavior as a living being.
External reference — all senses of the word “Bark Sound” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.