Balanced ratio of first aroma, body aroma and fundus aroma. The first aroma can be smelt quickly by the pup, while the body aroma and fundus aroma have a high degree of coverage capability. Fragrant smell lasts a very long time, and over 85% of the fragrant smell remains 70 days later. High temperature resistant granulation. The aroma degree almost does not decrease, and over 80% of the fragrant smell remains 70 days after granulation.