Here's why:
* Sound carries differently: Sound travels further in open areas, like a savanna or forest clearing, than in dense forests or mountainous terrain.
* Wind direction: A strong wind blowing towards you could carry the sound further.
* Tiger's size and health: A larger, healthier tiger with strong vocal cords can produce a louder roar.
* Time of day: Roars are often more easily heard at dawn and dusk, when the air is cooler and stiller.
However, it's important to remember that:
* It's not always the case: Hearing a tiger's roar from two miles away is not a guarantee. Many factors can influence sound travel.
* Other sounds: There might be other loud noises in the area, such as traffic, machinery, or animals, which could drown out the roar.
So, while it's possible, it's not a given that you'll hear a tiger roar from two miles away.