Some frogs and reptiles can be poisonous. All spiders have venom, but only a few are toxic to humans.
There are greater poisons out there. Deadly toxins can kill the body and the soul.
Peter talks about some of these poisons in 1 Peter 2:1: evil, deceit, hypocrisy, envy (and jealousy) and unkind speech are the ones he mentions. If Satan had a storefront selling poisons, these would surely be prominently displayed.
But, just because there are poisons in the world and animals that can inject poison, it doesn’t mean we have to drink poison or expose ourselves to it.
We have another choice: the pure, spiritual milk of 1 Peter 2:2. This milk comes from a heavenly source. It is capable of growing spiritual people.
So, which will we drink?