Excerpted and adapted from Fuzz: When Nature Breaks the Law, by Mary Roach, available September 14, 2021, from W.W. Norton. The Wildlife Institute of India in Dehradun is a thrown-down cluster of concrete buildings connected by outdoor walkways. Because these corridors have no walls, rhesus monkeys from the neighboring forest can occasionally be seen walking along behind or beside the humans. Neither species pays the other much mind, as if the monkeys, too, have meetings to get to and photocopies to make. This nonchalant coexistence is in contrast to the…