Dogs

　　Dog owners can certainly distinguish their own dog's barking, but can you understand what their barks mean? Although a dog's bark does not express specific meanings, it can convey its mental state to its companions or owners through different bark variations. Let's learn together what these dog barks express.
　　"En-En" sound: Continuous low, nearly sobbing nasal sound; if persistent, it indicates worsening pain, possibly due to illness or injury.
　　"Howling" sound: A short, high-pitched bark emitted when the dog experiences sudden severe pain. For example, when stepped on or caught, other dogs will come to comfort, but the injured dog cannot inform its companions why or what caused the injury.
　　"Bee-Woo" sound: A long howl descending from high to low, similar to a wolf's howl. It signifies pain, boredom, or calling distant friends.
　　"Woo-Woo" sound: The sound dogs make when sad or lonely. For instance, when puppies leave their mother, when desires are unmet, or when begging the owner.
　　"Bark-Bark" sound: A high-pitched "woof woof" indicates alerting companions or owners of a situation, such as a stranger intruding; gentle, short, low-pitched "woof woof" indicates happiness or a request, like when the owner returns home or during begging.
　　"Wo-Wo" sound: A short, continuous, loud bark dogs make when encountering enemies or feeling alert, used to scare others, such as a stranger entering the dog's home or when two dogs meet on a narrow path.