So we get our cues from nature (without cherry picking)?

Male lion kill cubs.  Should we follow their examples?

Some spiders eat (literally) their mates.  Should we follow their examples?

Ever notice how promiscuous dogs (among other animals) can be?  Should we follow their examples?

Many animals are brutal when they kill other animals.  Should we follow their examples?

Cats (yes household cats) are cold blooded killers.  Should we follow their examples?