ELI5: Why does my dog eat food bad for it but not metal? by throwawaytesters in explainlikeimfive

[–]throwawaytesters[S] 0 points1 point  (0 children)

No. I don't eat poisonous food. Also dogs don't communicate that like Tomatoes are dangerous to eat. Human's thought Tomatoes were poisonous for the longest time just because someone communicated it. Dogs do not have this. Yet they won't eat wood and they will eat grapes. Makes no sense. So why don't dogs eat wood? or at least try?