Intro: How much the animals are suffering

Humans can do good things for the world, but they can also harm animals. When we destroy wild land for buildings, it destroys their natural habitat. Farmers spraying chemicals on crops and factories/vehicles causing air pollution prevent many animals from reproducing. Some animals are hunted just for skins, bones, shells, or organs; others are hunted for meat, but only part of it is eaten. Pets cared for improperly also die, and this includes 50-90% of pet-type animals. What can we do to stop all this? Luckily, there is the World Wildlife Fund