#りんごのミアレレポート
デスロールの半球寝★☆☆☆☆

#りんごのミアレレポート
Death roll unihemispheric slow-wave sleep ★☆☆☆☆ <tn>Death roll is a manoeuvre crocodilians use on large animals to tear chunks of tissue. Unihemispheric slow-wave sleep (USWS) is when some animals sleep with one eye open and still alert.</tn>