A few examples of this would be sticky traps for flies/wasps or ones for rats even.
Why would a wasp, for example, fly onto a sticky pad trap that has 30+ other (mostly dead) wasps on it already? Surely at some point the incoming wasps would see it’s buddies either dead or helplessly trying to get unstuck, and think: “maybe something is wrong here”. But they don’t… Are they really that dumb?
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Yes, they are that dumb. They have an extremely small nervous ganglion compared to our brain. Most of it is needed for them to fly well. None of it is used to make complex decision, like not going on a trap because there are corpses of the same species on it.
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