Ive held of asking this for a long time, but at last OOT is ready.

[The once and future king]

Untill now OOT has been to mature and high brow for me to ask this question. However slowly but very surely it has been maturing to a point were it is ready to recieve and hopefully solve this deep mystery. Though I fear many may be to young to help in that process.

Here goes:

When I was a kid, dog poo would often dry into a grey or white colour. However today one never encounters white dog poo.

Why is this?