NAVLE（北美执业兽医考题）Day 529

A 2-year old female spayed Leonberger presents to you with hair loss around the face and eyes. A deep skin scraping is shown in the picture below. What is your diagnosis? 

一名2岁的雌性兰伯格犬在脸部和眼睛周围有掉毛的表现。 深层皮肤刮片如下图所示。 你的诊断是什么？