#24 I can see your thinking but I don't think it works in its current form (dog too small / scale does not convey business growth e.g. it could refer to the dog's health improvement)
#4 and #57 have potential, although I don't like the colors. Can you try alternative colors - Blue, Orange, Blood Red. Also feel free to add variations on the logo. The ".biz" looks a little small - please make it a little bigger. I quite like some of the other logos that have the ".biz" over the last three letters and use the dot over the "i"