By now, you know that Dolittle, Universal's take on the classic talking-to-animals tale starring Robert Downey Jr., was a bit of a box office disaster. But as has become a tradition in the wake of a major bomb, we now also get the post-premiere finger-pointing report, this time courtesy of THR. These things should usually be taken with a few fingers of salt, but Dolittle's postmortem is especially notable because it sounds kind of like the major issue on an otherwise amiable production was figuring out just what to jam into a dragon's …