For a long time, there's been a theory that the particular smell of an animal's anal gland is more than just a product of its pores. It's a combination of the au naturale scent and the bacteria that live inside the anal pouch. Meerkats produce anal paste (see, we got back around to it) in their anal gland, but before it gets to the outside world that paste travels into a little pouch. "Travels" is a nice euphemism for what looks a lot like Play-Doh being extruded from those horrifying doll heads from the '90s. The anal paste gets squeezed through pores in the anal gland into the pouch, where it mixes with "fecal material and environmental contaminants," (which is yet another euphemism, this time for poop and sand). Bacteria live in both the pouch and the gland, so there's plenty of time for them to break down some of the key molecules in the paste.