It is often a habit for dogs to dig their hind legs back. Before they became human companions, they were in dangerous nature. After excreting, they would often use their hind legs to dig into the soil to cover up their excrement, thereby preventing some dangerous animals. After the discovery, many dogs still have not forgotten this instinct.

Tip:

Dogs have many instincts, such as howling, digging, picking up things to eat, etc. We don’t need to pay too much attention to these.