Because of cross-breeding and domestication. Overall, the ears rigid are characteristics of dogs more active. They provide wider hearing and influence running speed. already the ears fallen are associated with the most domesticated breeds. The German breeder Max von Stephanitz, who lived between the 19th and 20th centuries and became famous for standardizing the German shepherd breed, explained in a book that “the domestic animal living in safety does not need to keep the ears always standing up to protect themselves. [Com as gerações,] the ear muscles gradually lost tension, allowing the ear to sag and fall completely”. In addition, some breeds have specific use for ears: the basset, for example, drags them on the floor to stir up molecules deposited on the floor, facilitating the perception of smells. See below the different classifications of ears. The same race can fit into more than one type.
AS TO ERECTION CAPACITY
IN RELATION TO THE FORMAT OF THE CARTILAGE OR LEATHER
IN RELATION TO THE SIZE OF THE CARTILAGE OR LEATHER
IN RELATION TO THE THICKNESS OF THE CARTILAGE
AS TO THE POSITION OF THE INSERTION
IN RELATION TO CARTILAGE CONSISTENCY
CONSULTANCY Renata Rita Correia, veterinarian
SOURCES Books The German Shepherd Dog in Word and Pictureby Max von Stephanitz, Dogspeak: How to Understand Your Dog and Help Him Understand You (various authors) and Cynology Dictionaryby Bruno Tausz