There was a bit in the UK news recently, about farmers who would like dog owners to pick up and remove dog turds. Apparently it can contains a bug which is responsible for a large proportion of cows miscarrying. Google will find it for anyone who's interested.
There are laws in UK urban areas, which chav-scum with status-symbol agressive dogs ignor. Council wardens issue penalties to pensioners who can't bend to collect the crap or school kids dropping litter. The police are hiding in their stations.
I saw a blind man fumbling around to bag up his guide dog's deposit; there's no excuse for most others.