The hermaphroditic characteristics of the spotted hyena are completely opposite to those of humans, so is the social system of the spotted hyena also opposite?
The primitive food chain is mutually exclusive, so that different species can continue to survive in nature, piranhas have a nemesis even if they are fierce.
In the wild, wolves are pack animals, and by living in packs they stand at the top of the food chain, but despite this, they face daily threats
