The usual eel is usually 2 holes, if more than half a catty big guy is basically an exit, eels are drilled with the tail out of the hole, half a catty more than the general hole will be very large, and large eels are most likely to choose the hole of the soil is relatively strong, is to seize the other animal's hole, such as in the lakeside, the river, the big reservoirs are a hole, unless he seized the cave was originally 2 holes The general eel grows in the rice paddy what the ground is relatively soft, the tail is good to hit the hole, hit out of the two holes

.