The main reasons why the dog digs into the crotch while squatting down are as follows:

1. Exploration: It may be that dogs want to know the smell and physical characteristics of us, so they dig into our crotches.

2. Playing: It may be that the dog regards it as an interesting game, especially when we play and interact with it, it will be more interested.

3. Seeking attention: Maybe the dog is trying to attract the attention of our pet owners so that you can give it more attention and interaction.

4. Anxiety: Some dogs are likely to show crotch digging behavior because of anxiety or nervousness. The biggest problem is that dogs feel uneasy or insecure.