* Region: Some areas have denser populations than others.
* Food availability: Mob size can fluctuate based on how much food is available.
* Season: Mating seasons and times of drought can influence mob size.
* Predators: The presence of predators can also affect how kangaroos group together.
Generally speaking, mobs can range from a few individuals to hundreds.
Instead of a specific number, it's more accurate to say that a "mob" is a loosely defined social group of kangaroos.