Manure is something that every garden needs. It seems that almost all waste can be used except for dog & cat. Chickens, bats, rabbits, and horses to name a few. All can be used to fertilize your garden. I found this nice chart on manure: Manure Guide Though these cannot be applied when they are "hot". Hot manure is fresh and straight out of the stall. Manure must be composted. Below is a link to a great site that lists the different manures. If you click the Blue title, it will take you to an article on just that type of manure. I cut out some of the manures because how much manure are you really going to get from your gerbil? They also suggested that you could go to the zoo. What I found odd was that the list divided steer and cow. I would have assumed that they were the same. In looking around the web and checking out manures I keep coming across manure tea. It seems like more of a process then I want to undertake but has anyone ever made some?