Grass snakes do no harm to people but, some folk like to kill anything they can with careless driving, hedgehogs for eample. Hedgehogs are now rarely seen in Clevedon, I reckon because people are slaves to garden styles and have left no cover for them in the garden. The same thing with birds, bushes are "out" patios are "in". Consequence is, no thrushes or blackbirds nesting places and no birdsong in the early morning. .