A growing menace in the form of 15-pound swamp rodents is threatening Delta waterways, and the state is throwing money, hunting dogs and birth control at the invasive pests which have the potential to destroy crops and wetlands.

The California Department of Fish and Wildlife has received $10 million in new funding for the eradication of nutria, or coypu, which are native to South America and have found their way to the Golden State after wreaking havoc in Louisiana and other places. Louisiana has lost hundreds of thousands of acres of wetlands to the rodent, a voracious herbivore with a largely indiscriminate palate