As Subliminal said, it is a sort of shorthand to indicate the sex of the animals.

For another example, if I'm correct you have 2 boys and 2 girls for your dogs, a female cat, and your unsexed BP, you could write:
2.2 dogs, 0.1 cat, and 0.0.1 BP.

If you have other questions about what things mean, this thread is a good place to look. It is full of all sorts of herp related acronyms and abbreviations, and is stickied in the "general herp" section.
http://www.ball-pythons.net/forums/s...ad.php?t=69059

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