You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift.

Your fist like ears allow you to make unarmed strikes dealing 1d4 +str and you gain a burrowing speed of 30ft. You also gain proficiency in unarmed strikes. 

Diggersbies are strong and powerful people you have +2 str and +1 con. 

Due to living underground for so long diggersbies have adapted to see in the dark. You can see in darkness as if it was dim light and dim light as if it were bright for a range of 60ft.

Diggersbies are similar to rabbits and therefore have a good relationship with many animals. You have proficiency with animal handling.