Humans might consider another mission to your planet if they knew how many earth species find you delicious.
When dealing with a technologically superior race, not something you want on the bargaining table.
And it's not just big animals! Remember that time I went swimming wearing only a breathing mask?
I've never seen anyone before or since covered with so many frog bites.
I'm the captain of a space ship! I deserve to be higher on the food chain!