Any wildlife has the potential to be dangerous if they feel threatened ... the second-most deadly animals in the world.

There are fewer than 3,000 breeding pairs of fairy terns left in Western Australia, with around 700 of those in the Perth metro area. They are threatened by humans, animals and rising sea levels.

The Minnesotan gray wolf has been listed as a threatened, rather than an endangered ... the largest mainland gray wolf population today at around 2,500 to 3,500 with small packs scattered ...