MongoDog is a library designed to sniff out the things that your application is doing within a mongo database. It plugs itself in between your app and pymongo and logs all of the commands that your application sends to the server.
A python library, that helps you sniff out your own code that is running on mongo (using pymongo or mongokit).
Mongo has profile functionality and it is great. Why do we need mongodog? Well, mongodog includes one very important feature that mongo profile doesn’t - python traceback of the calling code. Sometimes you just need to know where the command is coming from.