Dogs harassing wildlife has been a known problem for a long time. Here%2C an etching dated to 1690 showing a domestic dog chasing a heron off its nest at a wetland. Few dog owners who take their pets to lakes%2C ponds and rivers for swims ever reflect on why they don%27t see more nesting birds. Image available through Creative Commons license Wellcomecollection.org%252Fworks%252Fbzfrmdaf CC-BY-4.0