Crabs dig holes according to the size of their shells.
More Japanese Proverbs:
When your companions get drunk and fight, Take up your hat, and wish them good night.Japanese
Once conquered -- always a traitor.
Japanese
A man in love mistakes a harelip for a dimple.
Japanese
Moonlight and boiled rice.
Japanese
Love lives in palaces as well as in thatched cottages.
Japanese
Day has its eyes, night has its ears.
Japanese