Answer. Yes, Bookdog and of course BookMacster work under Mac OS 10.6.
Q. Are there any glitches? Answer: Prior to Bookdog 5.3.5, the "Bookdog" menu item between "" and "File" is a blank space when operating under Mac OS 10.6.
However, the menu still works if you click the blank space. Please do so, then "Check for Update" to get a later version of Bookdog which has this problem fixed. You should do so even if you don't mind having the blank space, since there are several other more important fixes as you will read in the Update News which appears.