Her five cubs are growing fast, and it's up to her to make sure the milk keeps flowing by keeping herself well fed.

For the guanacos, there are other priorities besides eating.

The mating season is beginning, and the males are eager to show who's boss.

There is only room for one dominating male in the herd.

Rivals fight for the job.

There's a lot of stake.

The winner gets the claim the herd females as his honey and pass on his genes to the next generation.

The loser must be on his way.

Now the dominant male can get down to business.

Her scent tells him, she is ready to mate.