These pics might help you.
(I took all of these images, but the animals actually belong to Adam at 8ballpythons, they were taken during one of the shoots for Keeping Ball Pythons). Sorry for the massive water marks -- the red dot is the berry in my logo, not anything on the snakes.
The blood trails are apparently normal and are just what excited boys do apparently.
This is courting behavior:
This is a lock:
and this is REALLY a lock:
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