Dung beetle

Oh little creature you're older than time,
Out of sight yet you are fine,
One of millions that keep pollution down,
Amazing your diet of waste coloured brown.

Incredible your strength and what you do,
All that effort and your sustenance poo,
How you've survived since millions of years back,
With 7,000 species and mostly coloured black.

Consider the merits of importing these chaps,
Converting to nutriments all our animal craps,
Cows and horses with our numbers high,

Sheep and dry stock would leave nothing to lie.