And here they are:

Guess why the Grey Treefrog has a dirty job?

    • Well, its not disturbing, but it is gross.
    • It...
      • ...uses its feet to make large foams. Ew.

Hornbills have their babies in the nest for 4 months. And by then it will get quite dirty.

Honeybees, what is dirty about them? WARNING:If you read any further, you will be so grossed out that you will think again about that honey jar. Do you even know what honey is? Puke. Bee puke. It is an example of good things turning out to be things nobody wants to try/eat/do. Ex. Hot dog meat is cow guts.

You already know vultures eat corpses. The least suprising thing on the list...yet.

Cleaner fishes eat parasites. Some parasites you've heard of: Ticks, Mosquitoes, Tapeworms, Nematodes, Leches, Lampreys, Vampire bats, Candirus, Maggots, etc.

Maggots are used to, yuck..., treat cuts.

Leafcutter ants farm fungus. Actually, they eat it. Actually, it is the only thing they eat. Actually, it is only found in leafcutter ant nests.

Sea cucumbers eat sediment. Not so bad, until you realize that they have to get through SLIME. And when you realize that sediment is part dirt, part dead organisms.

Dermestid beetles are used to clean museum carcasses of flesh.

If you know what dung is, then you know why the dung beetle is ranked #1. If you don't then get this:   It gets better! They not only eat it, but also lay their eggs in it, and even put it into balls an roll it while containing their eggs!