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Physicist Calculates Trajectory of Tiger At SF Zoo

KentuckyFC writes "Is it really possible for a 350-pound tiger to leap a 12.5-foot barrier from 33 feet away? (Said another way: a 159-kg tiger, a 3.8 m barrier, and 10 m away.) A physicist at Northeastern University has done the math, a straightforward problem in ballistics, and the answer turns out to be yes (abstract on the physics arXiv). But I guess we already knew that following the death of Carlos Souza at the paws of Tatiana, a Siberian Tiger he had allegedly been taunting at San Francisco zoo at the end of last year."

27 of 713 comments (clear)

  1. Call in the lawyers by arkham6 · · Score: 4, Insightful

    Well, I guess this is enough for the lawsuits to start flying at the zoo. Surely there are enough lawyers out there that will take the case. "Your honor, the zoo was clearly negligent in designing a tiger cage that a tiger could jump out of. The fact that the victim was allegedly taunting the tiger does not factor into the fact that the tiger was able to escape due to the mistake of the zoo building the environment."

  2. Which begs the question... by imstanny · · Score: 3, Insightful

    Which begs the question; What kind of methods are used to determine the 'standards' for an inclosure?

  3. Re:So he taunted... why difference does it make? by ScentCone · · Score: 4, Insightful

    The repeated mentioning of this guy taunting the animal irritates me, because it seems to imply it was his fault.

    Yeah, climbing over the fence to deliberately provoke a large predator and whatnot... totally the zoo's fault.

    --
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  4. the tiger had superior knowledge of the situation by John_Sauter · · Score: 5, Insightful

    The repeated mentioning of this guy taunting the animal irritates me, because it seems to imply it was his fault.

    Sure, if I saw a guy taunting animals at the zoo I'd think he was a complete jerk. If it was really out of hand, I'd call security to arrest the guy.

    But it's not something he deserved to die for.

    The tiger, obviously, disagreed with you. I submit that the tiger had better knowledge of the extent and degree of taunting that you do.

  5. Re:So he taunted... why difference does it make? by Anonymous Coward · · Score: 5, Insightful

    The repeated mentioning of this guy taunting the animal irritates me, because it seems to imply it was his fault.


    Sure, if I saw a guy taunting animals at the zoo I'd think he was a complete jerk. If it was really out of hand, I'd call security to arrest the guy.


        But it's not something he deserved to die for.

    It isn't as if this is a judicial sentence of death. What he deserved is irrelevant. You use that term when you are talking about justice not when you are talking about accidents with wildlife.

    It is a good habit not to blame the victim of a crime. But no real crime occurred here. He was just the victim of an accident that he caused. This should be repeated in every story discussing this event as a warning to any other stupid individual who thinks taunting tigers is harmless.
  6. Possibilities vs explanations by Schraegstrichpunkt · · Score: 4, Insightful

    "Is it really possible for a 350-pound tiger to leap a 12.5-foot barrier from 33 feet away? ... But I guess we already knew that following the death of Carlos Souza at the paws of Tatiana, a Siberian Tiger he had allegedly been taunting at San Francisco zoo at the end of last year."

    If we already know the answer, then the question really is, can we explain how a 350-pound tiger to leap a 12.5-foot barrier from 33 feet away, or do we need to do some more research?

  7. Re:So he taunted... why difference does it make? by MBCook · · Score: 5, Insightful

    But it's a mitigating factor. The tiger didn't attack some random person, this guy was doing something to provoke the attack. That puts the attack in a different category. Both categories are bad in this case, but they are still different.

    A well designed enclosure would have prevented this. The zoo is at fault. There is no question there.

    However, the guy wasn't innocent. The tiger may not have attacked if he was behaving differently. There is a risk when you tease a 350lb killing machine. I see the fact he was doing that as important.

    Your point is a bit like "sure he was kicking the dog, but that doesn't make it OK that the dog mauled him". Just because the result (mauling) was worse than the crime (kicking the dog) doesn't mean the crime is irrelevant.

    Now teasing a tiger is not as bad as kicking a dog... the tiger isn't actually injured. The point is that the guy is not without blame.

    If I had kids, I'd rather they heard this story with that fact, and would get the chance to learn the lesson "don't taunt things that can easily kill you, even if you think you're safe" than either never learn that lesson or learn it the hard way.

    --
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  8. Lateral velocity != jumping velocity by daffmeister · · Score: 5, Insightful
    From TFA:

    From our calculations it was shown that a tiger only needs a little over 26 mi/hr to cross the 33 ft moat and clear the 12.5 ft high wall. From the current data that is available, a tiger can attain a maximum speed of 35 mi/hr.

    35 mi/hr across the ground != 26 mi/hr at a 55 deg angle. I'd like to see how they propose converted that lateral velocity to the highly inclined one.

    This is high school physics done badly. Very poor analysis.

  9. Re:Hmm by Megane · · Score: 4, Insightful

    The people who "designed the enclosure"? It was (IIRC) a WPA project from the 1930's. It wasn't designed, it was built.

    The crazy part was that the people who ran the zoo had no idea of its height, or lack thereof. And when inspectors came through the zoo a couple of years ago, nobody mentioned to the zoo that the height was below standard. In other words, it's not a design problem (the height was fine when it was built, back when nobody was stupid enough to taunt tigers like that), it's a maintenance problem, as in keeping up to standards, or even knowing that you aren't.

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  10. Re:The sickest part about the tiger attack... by Punko · · Score: 4, Insightful

    No. the sickest part was putting the tiger down because a human was stupid beyond belief and a zoo didn't build an enclosure to protect the public AND the tiger from stupid humans. The tiger deserved the tribute because it died because it behaved to its expected nature. The human was mauled because he was STUPID and the zoo was irresponsible.

    You can blame the zoo and blame the human, but the the tiger was innocent - the tiger was the victim here. Do not loose sight of this fact.

    --
    If only we could fall into a woman's arms without falling into her hands
  11. Re:the tiger had superior knowledge of the situati by 192939495969798999 · · Score: 4, Insightful

    Also, taunting a tiger is a lot different than taunting a shrew, a turtle, or any other animal at the zoo. Those other ones don't have a reputation as man-eaters. Who's to say that a tiger couldn't get out of pretty much any enclosure, given that it felt pissed off enough? the 12-footx30-foot distance is supposed to remind you that this cat means business.

    Taunting a tiger is a bit like running down the street screaming the N word in Harlem: there are much, much safer ways to be a jackass.

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    stuff |
  12. Re:Darwin award contender? by Tony+Hoyle · · Score: 4, Insightful

    Being a jerk for a few minutes to a tiger doesn't mean you should die.
    But it does mean that if you do die, it's your own stupid fault. QFT.

    Nobody is saying he deserved to die. If you take risks with your life and the risk doesn't pay off.. well tough.
  13. Re:A lot by 192939495969798999 · · Score: 5, Insightful

    I've been to tens of zoos hundreds of times, as I'm sure many of us have, and I always look at the tigers. They are almost always sleeping, or maybe moving to where the food is, eating it, and then sleeping. Once I saw one playing with a ball or a tree trunk and looking excited... and then it got its food that it was waiting for, ate it, and layed down to sleep again. In all of these situations the tigers seemed to care less that there people present, including typical zoo noise like kids "roaring" at the tigers. I shudder to think the amount of contact/irritation/etc. that would be necessary to have the following happen:
    1) distract the cat from sleeping,
    2) make it get up,
    3) make it target you,
    4) make it risk its own safety to jump out of its "den" to attack you,
    5) make it actually attack, and
    6) make it track you hundreds of feet past many other potential targets, now that it's free.

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    stuff |
  14. Re:So he taunted... why difference does it make? by smooth+wombat · · Score: 5, Insightful
    he repeated mentioning of this guy taunting the animal irritates me, because it seems to imply it was his fault.


    Let's see. On an average day at the zoo, there are several thousand people who visit this enclosure. During all the years this enclosure has been around and has had a tiger of some sort in it, not one person has ever been attacked, let alone killed.

    Then one day, after drinking and some drug use, these asshats decide to stand on a fence around the enclosure, yell and taunt at a wild animal which is known to be able kill humans, possibly shoot it with a slingshot, and yet somehow, despite the actions of supposedly the smartest animal on the planet, it's not the guy's fault he got himself killed?

    But it's not something he deserved to die for.

    It's called being responsible for your actions. Put another way, survival of the fittest in all its glory.

    --
    We will bankrupt ourselves in the vain search for absolute security. -- Dwight D. Eisenhower
  15. Who cares!? by jav1231 · · Score: 4, Insightful

    I contend that the enclosure was just fine. The tiger was content until he was taunted. This story had less to do with "how to contain a tiger" than "don't taunt the potentially man-eating tiger!" Note, he only went after those who taunted him! I'm not saying it was justified, but given that the tiger could hardly go to the authorities and his predisposition to violence he did what a tiger does back home.

  16. Re:A lot by llZENll · · Score: 3, Insightful

    The original post couldn't be more correct. "The only tragedy here was the tiger having to be killed."

    Let the tiger kill 1 person, 100 people, 1000 people, it is a fucking TIGER people, not a bunny rabbit, it was born to do one thing only, KILL! DO NOT expect it to do anything else if its free, and sure as fuck don't kill it for doing so, tranquilize it for crying out loud. Any tiger left on the face of the planet is worth 1,000,000 times more than any human, they are endangered, WE ARE NOT.

  17. Re:The SF Zoo? Hah! by gb506 · · Score: 5, Insightful

    This is an example of the tragedy of privatization.

    How so? The fence is the same height today it was when it was a public zoo. The zoo was public when the fence was built. Seems a better case can be made that public zoos don't know how to design safe tiger enclosures.

  18. Re:Hmm by longacre · · Score: 5, Insightful

    "The tiger didn't go crazy, that tiger went tiger!" --Chris Rock

  19. Re:the tiger had superior knowledge of the situati by Beer_Smurf · · Score: 4, Insightful

    More tigers = fewer jackasses.
    I don't see the problem.

  20. Re:So he taunted... why difference does it make? by Hatta · · Score: 4, Insightful

    I dunno, if you stick your tongue in an electrical outlet, you deserve to get shocked. If you walk across a highway blindfolded, you deserve to get hit. If you taunt a tiger, you deserve to get mauled. If he didn't want to get mauled to death, he could have easily left the tiger alone.

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  21. Re:Hmm by Gospodin · · Score: 4, Insightful

    Actually, the guy 400 yards away with the high-powered rifle has the advantage. As was verified in this case.

    --
    ...following the principles of Heisenburger's Uncertain Cat...
  22. Re:Hmm by osu-neko · · Score: 5, Insightful

    This is unfortunately true. An animal that has actually overcome its instincts of avoidance (often due to unfortunate necessity) and killed a human becomes much more likely to do it again. There are no animals that, in the wild, are naturally mankillers, but there have been many documented instances of certain individuals becoming mankillers. Whatever the circumstances were and how unfair they were that provoked the first attack, once an individual animal has killed a man successfully, it becomes much more likely to do it again and again. Sadly, it's usually some stupid man who's turned the animal into a mankiller, but the fact remains that the animal now is a mankiller, and needs to be dealt with accordingly. I don't mourn for the idiot who provokes and gets killed in the first place, but one must deal realistically with the animal to prevent future innocent victims.

    --
    "Convictions are more dangerous enemies of truth than lies."
  23. Maybe you by ArchieBunker · · Score: 3, Insightful

    Maybe you had the urge to taunt dangerous animals but I never did. If you feel like killing something then go hunting. I nominate the guy who died for a Darwin Award. Its a tiger, anything smaller and less powerful than it is food.

    --
    Only the State obtains its revenue by coercion. - Murray Rothbard
  24. Re:Darwin award contender? by jafiwam · · Score: 4, Insightful

    Nobody is saying he deserved to die. If you take risks with your life and the risk doesn't pay off.. well tough. Actually, A LOT of people are saying that. (Go visit Fark threads on the subject.)

    And, they're right.

    Here's a list of other stuff (in case you weren't following all the articles) they did just that day;

    - waited for the Zoo to empty out (premeditated)
    - collected tools to do the task (slingshot, and something else (i forgot)
    - drove drunk (open container of vodka in the car) to the zoo
    - stayed around after zoo was closed (trespassing)
    - climbed over a barrier designed to protect animals from humans
    - lied to police about what happened
    - clamed up, lawyered up right away

    Those asshats deserved to die just from the drunk driving alone. Acting in such a way that causes an endangered animal to be killed brutally by police, while two of them (India-Indians) should know damn well what tigers can do, yeah, that pretty much adds up to NO sympathy.

    These asshats deserved to die. Just like those asshats that drove off the end of the Travolta's runway deserved to die. The human race is better off without them.

    This is not just kids fooling around tying cans to the neighbor's dogs tail. It's real, bona fide criminal activity and animal abuse.
  25. Re:Very Interesting by Chris+Burke · · Score: 4, Insightful

    Am I the only one who finds it fascinating that the ONLY ones the tiger directly attacked were the 3 guys who were taunting it? That it specifically hunted down the 3 individuals who pissed it off? And they had moved away from the area...

    Nope, I find that very interesting too. It pretty much proves to me that this was their own stupid fault. This was not some random man-killing tiger who escaped on a whim and hunted a human. This thing was pissed, it was out for revenge, and there's no way it was going to those lengths just because it was mildly annoyed. Out of all the visitors to ever walk past the cage, these were the only ones to taunt it in any way? Not bloody likely. They must have gone above and beyond the call of stupid duty to provoke this attack.

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  26. Re:Hmm by Wog · · Score: 5, Insightful

    Actually, in this case it was SF police officers with .40 sidearms. I imagine that they were able to win only because there were so many rounds expended, as handgun rounds are hardly adequate for this sort of animal.

    In any case, most folks believe that human life is more important than animal life, so when a police officer arrives to find a "rare" tiger mauling a "common" human, you can't be surprised when he opts to kill kill the freaking cat. The suggestion that the lives of a few humans should be willfully sacrificed to preserve the life of an animal flies against our built-in desire to preserve our race, so don't expect to be popular when you make it.

  27. Re:Hmm by CastrTroy · · Score: 3, Insightful

    But now the tiger is out of his cage, and the guy standing beside the idiot who was taunting the tiger is also in danger, along with probably a lot of other people who just happened to be at the zoo that day. What about all those people?

    --

    Anthropic principle: We see the universe the way it is because if it were different we would not be here to see it.