为何狗的嗅觉比人类灵敏得多？

Dog"s superior olfactory abilities are due to their large number of olfactory receptors (300 million vs. human"s 5 million), larger olfactory processing areas in the brain (40% vs. human"s 5%), unique nasal structure, and independent use of both nostrils. This enables them to detect faint scents, excel in search and rescue, detection, and makes them indispensable partners for humans in various tasks.