Why Do Venomous Animals Live In Warm Climates?

Why Do Venomous Animals Live In Warm Climates?

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100 Replies to “Why Do Venomous Animals Live In Warm Climates?”

  1. All chemical reactions occur faster in higher temperatures. This includes metabolism. If animals are moving faster in warmer areas, venom may be needed to kill prey before they get away.

  2. I have been a subscriber to Periodic Videos for years, I am so jealous you were able to meet Prof. Sir Poliakoff….
    He has been given Knighthood,
    of course after this video lol

  3. We only have one venomous snake in Montana but it's freaking everywhere. Pretty much every spider is venomous… we have like 3 different types of widow spiders, hobo spiders, wolf spiders, tegenaria's, a few types of recluse.. you name it and it's cold af here most of the year. However, almost no one ever dies from spider bites so there's that. I think that's because even though we have a wide range of potentially lethal spiders, in general, there aren't very many of them and most of them life in the forrests. I have lived here for 32 years and haven't ever seen any of the spiders I mentioned save the wolf spider.

  4. Maybe non venomous snakes thrive because we humans don’t kill them. But we do kill venomous snakes with out a thought. As if we were doing a favor to nature.

  5. Does not explain the strength of the venom and sorry there are less Taipains or King Browns or death adders in southern Aus and they are more active up here due to warmer temperatures. Never head of a European Viper quick search and it is "Not Regarded As Especially Dangerous". Should not a cold blooded animal require a stronger venom to kill prey quicker in a cold climate as they are not as active as compared to a warm climate? Perhaps it's because we don't have any potential mammalian predators of snakes other maybe quolls? Aus is bare of large carnivores other then the saltwater crocodile which as is the most dangerous croc species if not the most dangerous large carnivore in the world. People have swum with great whites and tiger sharks, but you are never going to swim with a large croc.

  6. What you said about not building up an immunity to Venom is untrue there's a YouTube channel with the guy is got it immunity to Venom for multiple different snakes very very interesting he's been handling snakes for his whole life

  7. One thing that wasn't added to the scale formula is the size of the animals. There are spiders for example in Iceland, none of them are large enough to penetrate your skin with their fangs, some of them may be venomous though. Correct me if I'm wrong on the terminology, though.
    I do know that humidity, temperature and the availability of food is what allows certain types of animals evolve larger, maybe this is something to be added to the debate?

  8. But it still gets hot in southern Australia. I've experienced 50C in Victoria and there are lots of Brown and Tiger snakes around here. They can kill you. No funnel-web spiders though.

  9. Why non-venomous snakes are more successful than venomous ones may have something to do with venomous ones being viewed more as a threat and eliminated by other species. Like lions will preemptively attack hyenas because they know they are a threat.

  10. I'm sorry but this question is stupid man. Maby its because snakes and spiders dont like colder climates. I mean there are more snakes and spiders in warmer climates vs cold. Thats all there is to it.

  11. You’re telling me I can drink venom, and not have it go into my blood stream like a high blood alcohol level

  12. Here on Balkan we got like 2 venomous snakes and that's all about what can kill you by putting venom into blood. There are few spiders and scorpions and insects venomous just a little bit and they need army of attackers to kill you(hornets are kinda big thing these days).
    But all that lack of venomous things is balanced by abondence of warm blood animals which actually don't need venom to kill you: bear, wolf, koyote, wild boar, fox, deer(surprisingly dangerous)

  13. Well, Im still not convinced of this conclusion. Ofcourse there are more venomous animals in warm countries. I mean come on; Canada, Greenland, all the nordic countries, the north pole and the south pole, are virtually free of venoumus animals. And in Europe the few dangerous ones live in the southern parts. In Russia they all also live in the southern parts of the country. At the same time, in Australia it feels like just about everything is venomous and out to get you, in Mexico its even worse. And I dont think the tropics/djungles/countries like Brasil, are safe from venomous species either. Africa also got its share. And Asia as well. Naaa, those dudes are definitely missing something.

  14. I'm less than 2 mins in, so you may cover this later….but most of the venomous species are cold blooded. So more heat = more energy. More disposable energy = higher probability of developing some useful chemicals….
    Imagine you're making a solution, like a simple syrup. The sugar will dissolve in cold water, but it will dissolve a lot quicker in warm water. Heat is a catalyst for chemical reactions.

  15. Who is this guy?
    He’s so gorgeous. Makes me wish I was closer to 25 than 15 rn
    Wow 👋❤️❤️💕💕🥰🥰

  16. how do snakes "evolve" venom? why did it only happen to certain groups? spiders, snakes, but not primates or birds? is it just chance? (no, I'm not saying design)

  17. A better question: why did I just watch a video based on a BS premise with a click-bait title? I give it one thumb down (two if I could).

  18. Isn't this just sort of an artifact of: more things live in warmer places? I'd wager diversity of species and overall population of organisms is also higher in warmer areas. If 5% of species are venomous and mexico has 1000 while canada has 100, then you get 10x the venomous species in mexico.

    Ah I guess they address this at 7:40. That's what I get for watching old Veritasium.

  19. HMMMMM…no Aussi accent…Whitecaps bell Tee shirt……You're not Australian mate! I bet you don't even have shrimp on the barrie or drink Fosters! Most likely carry a small swiss army knife too!

  20. In before I watch the rest of the video. I would think this is because most venomous creatures deliver their venom from a sting or bite which is required to pierce the skin and inject the venom into the blood. Species that are successful in colder climates tend to have thick layers of fur/skin/hide/blubber which would make it more difficult or borderline impossible for venomous species to deliver a lethal strike. So venomous species naturally became more successful in warmer climates where their prey did not develop these mechanisms to insulate from the cold.

  21. I find it hard to believe that anyone who graduated from elementary school doesn't know the answer to this question. What's next, where does ice come from?

  22. There is one venomous snake in Hawaii The Yellow Bellied Sea Snake So please if your going to post a Video get your facts right

  23. Isn't it about energy conservation. In hot climates energy is precious. It takes less energy to bite something and let it die than it does to fight it. The same thing goes for defense, if the platypus gets you with their spurs the venom causes pain so the platypus doesn't have to fight for survival

  24. i stopped the video at 1:41 and can tell you its because of the diversity level difference between warm and cool climates and energy consumption to produce venom/poison

  25. ok, but what about agression? I have seen things how the same species of snake or spider will be more aggressive in the valley than up a mountain
    Heat seems to make everyone aggressive even people

  26. Here's my answer: 1. Because most venomous animals mainly hunt coldblooded prey. In warm regions the blood of coldblooded animals is… well err… less cold which makes the chemical reactions venom is based on take place faster and with greater effect… Meaning prey dies faster and the hunter can avoid their prey escaping or even wounding them more often.
    2. Tropical rainforests and coral reefs occur only in warm climates and house a huge chunk of the worlds species in general (venomous or not).
    3. Venom usually evolves to effectively hunt only a handful of very specific prey species; venom is often a specialist survival strategy. Tropical rainforests and coral reefs have far more specialist species than any other type of environment in nature.

  27. One reason why some snakes species lost their venom is that evolution follows "use or loose it" law – if there is no gain from having venom, it is possible for it to got lost due to genetic drift / random mutations.

  28. Would'nt the same ice what covered Ireland have covered England as well?
    There's snakes in southern England including the Viper.

  29. Wouldnt the countries with the most species have the most venomous species. The warm places are the most biodiverse so obviously…

  30. Welllll Australia was in isolation for a really long time so a lot of organism evolved and probably a lot of predators, so species with venoms live longer and they outlive others of the same species so basically natural selection idk bro thas my hypothesis

  31. I live in a cold place, almost no insects, and almost no snakes, only mammals and birds can live here, as most poisonous are reptiles only in hot places are found

  32. I know this video is a couple minutes old (LOL) but was wondering… at 2:13 we see the estimable Prof. Martyn Poliakoff, who has a remarkable head of hair. And he's obviously very smart.

    I find it interesting with his hair style, and wonder if his hair has some “allergy” to brain activity. Another guy that was kinda smart, Mr. A. Einstein, had a similar hairstyle…

    Is there any connection to flat hair and morons, and wild hair and Brainiacs???

    Anybody else wonder this, or am I just a "flat-hair"?

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