In other words, dogs can’t understand and interpret the world without this sense of smell. In fact, researchers believe that their brain is specialized in identifying scents, namely that they use a large part of their brain to analyze these scents compared to humans.

So, the next time when you take your dog for a walk and see that they sniff almost everything around them, just let them do their job.

Did you know that these are the Most Popular Dog Breeds in the US, According to Experts?