"Native birds and small mammals are already being negatively affected on multiple fronts by climate change, urban development, deforestation, toxic chemicals, invasive species, and the degradation of native grasslands. Domestic and feral cats are just one more factor making their survival increasingly tenuous. The effects on our environment from the loss of the multitude of small mammals and birds extend well beyond their direct killing by domestic cats. Birds are important for the pollination and seed dispersal of many plants. Small mammals are prey for bobcats, foxes, dingoes, weasels, caracals, ocelots, snakes, and birds of prey. Domestic cats have essentially replaced all those animals in urban and rural areas."