Animal echolocation extremely narrow beams and many receivers to localize a target (multibeam sonar), animal echolocation has only one transmitter and two receivers (the ears) positioned slightly apart. The echoes returning to the ears arrive at different times and at different loudness levels, depending on the position of the object generating the echoes. The time and loudness differences are used by the animals to perceive distance and direction. With echolocation, the bat or other animal can see not only where it is going but also how big another animal is, what kind of animal it is, and other features.. At the most
Brother Dusty-Feet Brother Dusty-Feet Brother Dusty-Feet is a children's historical novel written by Rosemary Sutcliff and first published in 1952. It is set in England during the reign of Queen Elizabeth I. It is Sutcliff's fourth book. Hugh Copplestone is an orphaned eleven-year-old boy living with his paternal Aunt Alison, who resents the duty of looking after her brother's child. When he answers her back after she speaks disrespectfully of his dead father, Aunt Alison vindictively vows to have his pet dog Argos killed on the excuse that she has no duty of care to the animal and no intention of incurring