In comparison to venomous animals, poisonous animals are far and few between. It turns out having to get halfway eaten before potentially harming a predator isn’t an incredibly popular adaptation in the animal world. But the animals who managed to stick it out utilize some of the most lethal toxins on the planet, some even eclipsing what even the most venomous animals in the world are capable of. The animals on this list are ordered by increasing oral LD50 (Lethal Dose 50%), so the further up the list we go, the smaller the amount of toxin it would take for your body to fade to room temperature.

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Apologies for reading Striated a little incorrectly! My mind saw the "I" and "A" the other way around.

The Most Poisonous Animals on Earth (Spoilers):
_______________________________________________
15. Cane Toad (LD50: 0.5-1 mg/kg)
https://goo.gl/OHKNoE
https://goo.gl/fDiYJa
https://goo.gl/xSm3Hb

14. Spanish Fly (LD50: 0.5 mg/kg)
https://goo.gl/se0jDU
http://goo.gl/4k5FNm
https://goo.gl/UZqszL

13. Flamboyant Cuttlefish (LD50: 0.35 mg/kg?)
https://goo.gl/48uqmT
https://goo.gl/vryOzs
https://goo.gl/Lema9m
https://goo.gl/rn5JjP

12. Xanthid Crabs (LD50: 0.334 mg/kg and 9 MU/g)
https://goo.gl/g0BeaW
https://goo.gl/7PsHxP

11. Comb Star (LD50: 0.334 mg/kg and 520 MU/g)
https://goo.gl/AnQ9EN
https://goo.gl/AGXrad

10. Rough-Skinned Newt (LD50: 0.334 mg/kg and 1000-1500 MU/g)
https://goo.gl/RRF1zl
https://goo.gl/6CJH11
https://goo.gl/zMxS1C
https://goo.gl/WMBjdf

9. Ribbon Worm (LD50: 0.334 mg/kg and 25,590 MU/g)
https://goo.gl/RK8vHG
https://goo.gl/NVCxYv
https://goo.gl/K0pfnJ

8. Puffer Fish (LD50: 0.334 mg/kg and 5-6 million MU/g)
https://goo.gl/W3QvT3
https://goo.gl/4iYj7D
https://goo.gl/NtnJjT

7. Rove Beetle (LD50: 0.14 mg/kg)
https://goo.gl/cfRd37
https://goo.gl/mqnJ89
https://goo.gl/96CO45
https://goo.gl/P5BpN5
https://goo.gl/4mtd7U

6. Hooded Pitohui (LD50: 0.12-0.5 mg/kg)
https://goo.gl/SYXpQk
https://goo.gl/VWjts7
https://goo.gl/24Ltmr

5. Golden Poison Dart Frog (LD50: 0.12-0.5 mg/kg)
https://goo.gl/iZPgFa
https://goo.gl/sZM5Ax
https://goo.gl/9IirtM
https://goo.gl/y7ArYc
https://goo.gl/yLPe9p

4. Beadlet Anemone (LD50: 33 μg/kg)
https://goo.gl/yQOJLP
https://goo.gl/2s5j7C
http://goo.gl/KFgrnq
https://goo.gl/bw9k96

3. Bundosoma granulifera (LD50: 4.5 μg/kg)
http://goo.gl/XV0pR8
https://goo.gl/gKDDSL

2. Palythoa toxica (LD50: 0.4 μg/kg)
http://goo.gl/dkMqvN
https://goo.gl/lvm8m2
http://goo.gl/S3Blk1
http://goo.gl/qVa0v3

1. Striated Surgeonfish (LD50: 0.2-0.5 μg/kg)
https://goo.gl/1ZeVqg
https://goo.gl/Z06qRT
https://goo.gl/z5cLwh
https://goo.gl/y2foLm
https://goo.gl/xrkBfx

Additional Reading:
http://goo.gl/dGkuGO
https://goo.gl/BBFAVd
https://goo.gl/nDD5J9
https://goo.gl/emzDuY
https://goo.gl/qVm9by
http://goo.gl/4tEQvl
https://goo.gl/RzE7XH

This was, by far, the most difficult to research list we’ve done thus far. Days upon days looking through books and research articles trying to find the best way to make this list as for some reason, no one has seemingly ever put together a list of just poisonous animals. I apologize if I sound silly for being miffed because of this, but seeing hundreds of lists simply copying one another with no attempt to do actual research themselves was disappointing to say the least. I’m not sure if this list is the gold standard, but it’s certainly a start for anyone else who wants to make an even better list in the future.

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