 The number of non-target animals killed has caused national and regional animal-protection organizations such as the Humane Society of the United States, American Society for the Prevention of Cruelty to Animals, Massachusetts Society for the Prevention of Cruelty to Animals, and others to continue to lobby for stricter controls over the use of these traps in the United States.Trapping might lead to stress, pain, or even in some cases death for the animal, depending on the type of trap.Traps that work by catching limbs can occasionally cause injuries on the limbs, especially if used improperly, and the animal is left unattended until the trapper comes by, and might die e.g.