Birds first, not your pesky moggie.

clipped from www.timesonline.co.uk New estate bans cats and dogs to protect birdlife A property developer has banned homeowners from keeping cats or dogs to protect birdlife on nearby heathland. Residents on a new estate who fail to comply with the ban could ultimately face eviction. The heathland is home to the endangered Dartford warbler as well as nightjars and woodlarks.

It will never be enforced. Blackpool Council withdrew the mandate for Fishers Field in South Shore where it was said to have been left to the council for children to play football - if there are any Americans reading this that is the gentlemans' game played by overpaid children, sorry soccer.
I bumped into a former professional footballer who was taking his little boy and their dog on the field for exercise. Well not really! The child would get his exercise and the dog would have a shit. Okay, perhaps picked up by the intelligent soccer player. But the Parvo Virus cannot be picked up in a plassie bag!!!
There are a few dog owners who actually carry cleaning fluid along with all the accessories for cleaning up after their pets. Unfortunately they are so few, and the irrepsonsible so many.