This study does not quite get it right although many animals may fear us for various reasons, the real reason, the base reason, is found in Genesis.

SNIP>>>A new study by Western University demonstrates that smaller carnivores, like European badgers, that may be prey to large carnivores, actually perceive humans as far more frightening. Globally, humans now kill smaller carnivores at much higher rates than large carnivores do, and these results indicate that smaller carnivores have learned to fear the human ‘super predator’ far more than they fear their traditional enemies.<<<

https://www.sciencedaily.com/release…0725135357.htm

..them, “Be fruitful and multiply, and fill the earth. 2”The fear of you and the terror of you will be on every beast of the earth and on every bird of the sky; with everything that creeps on the ground, and all the fish of the sea, into your hand they are given. gen 9:2