How your logs intersect at the corners is one of the most defining features of your home.
Dovetail. This style is used with square or rectangular logs. The corner is cut in a fan-shaped wedge and interlocks with perpendicular logs.
Corner post. A post is found at each corner into which grooves are cut to hold log ends. Looks similar to post-and-beam construction.
Saddle-notch. A notch on the bottom of the log straddles the top of the log coming from the perpendicular wall. Both logs extend past the corner.
Butt-and-pass. One log stops where it meets an intersecting log, and the other log extends past the corner.