Tigers
Humans are definitely one of the more interesting lifeforms you can observe. In general, they dislike urine as they find it vile and dirty. They however can't help but be fascinated with the smell of it. In the case of tiger urine, they created a snack known as buttered popcorn, which smells just like it.
Analyzing humans can appear to be a very daunting task, which it frankly is. There are no shortcuts to understanding their insanity.