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Yes, some cacti have very dangerous thorns!
When I was in the cactus park photographing them for a post, I accidentally touched a cactus.
Oh... immediately, a few thorns pierced my wrist.
Couldn't get them all...
And a friend took me to the hospital (where I also had to pay), that's what I paid for my photos of cacti.

This cactus, it has very long spines with a hook at the end!
IMG_20190619_164816-40++.jpg
But the 5 remaining thorns that we could not pull out were very painful!
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oh no, it hurts to see even from the photo 😱

When my son was about two or three years old, he fell and landed with his hand on the cacti pots 😟 His little hand was full of thorns, I was getting them out from under the skin during days and days while he was sleeping...

Oh...poor baby!
This is good and you are lucky that you were able to pull out the thorns to your son!

The thorns in my fingers were long and they went deep, it hurt me. And in the ambulance, I waited almost 2 hours for my turn.