Counting wildlife is no easy matter, especially with a wide-ranging and stealthy forest dweller like the tiger, which is in the spotlight this week. On 28 March, India announced that its tiger population, in decline for decades, has increased by 225 animals over the past four years, to a total of 1,706. The scale of the increase is open to dispute, but the announcement signals a welcome development: the beginnings of a more rigorous approach to counting the big cats. (Editorial)