This is the second Cal King I've found this year with a weird belly pattern:

I'm beginning to suspect it isn't that uncommon for this locale.

Other things I found yesterday -

s142.photobucket.com/albums/r103/FunkyRes/20070403/?action=view&slideshow=true
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3.6 L. getula californiae
1.1 L. getula nigrita
1.0 Pantherophis guttatus guttatus
1.0 Boa constrictor constrictor (suriname, fostering/rescue)
3.3 Elgaria multicarinata multicarinata
1.1 Felis catus (neutered)
1.0 Homo erectus (me)