If you visit a zoo, you might be captivated by the animals you see—majestic lions, curious meerkats, soaring birds of prey. But this is not always the case. Some zoos don't always give us that ...

Animals are noisy. And their noises can travel a long way. But making sounds can be a double-edged sword: it can help them communicate, sometimes over long distances, but it can also reveal them to ...