PHOTOGRAPH BY TIFFANY CORLIS, ABC NORTHWEST VIA EPA
Published March 3, 2014
We talked to Terry Phillip, curator of reptiles at Reptile Gardens in Rapid City, South Dakota, about python-croc relations and portion control at mealtime.
These photos suggest two monstrous animals battling, and then a snake that might just regret its meal later. Is this a rare moment that someone happened to capture or just a standard day in the wild?
First, these animals aren't giants. That snake is likely about 15 or 20 pounds [7 to 9 kilograms], and the croc might be 5 to 7 pounds [2 to 3 kilograms], probably three feet [one meter] long. And for these species, native to that part of Australia, this is a very natural event. While that looks like a really big meal, it's a pretty common one for that type of snake. Olive snakes are known for being phenomenally powerful, pound for pound, and for feeding on large food items.
What danger is there to the snake in this scenario?
Teeth. The croc's teeth could razor right through that snake. If the croc could then shake its head, it could do real damage—but it probably wouldn't have that chance here. That's one reason snakes intentionally go for the neck and shoulder region when they attack, to try to avoid being bitten themselves. They'll grab on just behind the skull and coil up to hold the croc in place. But even if a snake is bitten, it has a phenomenal immune system and can fight off many infections. We see huge scars on wild snakes; they do get beaten up by their prey.
Would the snake always win in this scenario?
Not necessarily. Both of these are apex predators in their environment. Big Johnson's crocs eat little pythons and vice versa.
How does a constrictor like a python know when it's "safe" to let go and eat?
Snakes are very sensitive to their prey's heartbeat. Normally a python will constrict until the animal asphyxiates and the heart stops. But crocs can go a long time without oxygen. In this case I'd guess that the snake constricted with such force that it compressed the chest cavity until the croc's heart had no room to beat. So the croc probably died of cardiac arrest rather than suffocation.
We always hear that snakes can "unhinge" or dislocate their jaws to eat big food. Is that what's going on?
No. Snakes have no chin, no chin bone, so their jaws aren't connected the way ours are. There's nothing to dislocate. Instead there are really stretchy ligaments that determine how wide the mouth can open.
Snakes seem to "know" to eat their prey from the narrowest point—the mouth end—which makes the animal easiest to swallow; is this instinctive?
There's probably some instinct at work there. It's a particular behavior you see with snakes in the wild and captivity. After killing the animal they'll let go and rest. Then before eating they'll search around using their nostrils and tongue to find the smell of saliva from the animal. That's the end they want. With crocs there isn't saliva per se, but maybe the smell of mucus does the trick.
What's the biggest prey item you've heard of one eating?
It was a scrub python—closely related to olives—that ate a wallaby that was about 110 percent of its body weight. That was a good-size meal. But snakes regularly eat items 75 to 100 percent their size.
What do you make of the case in Florida in which a Burmese python's body burst after eating a crocodile? Did the snake use bad judgment about how much it could handle?
Snakes may occasionally start eating something and then abandon it after realizing it's too big. But that's not usual. Here's what actually happened in Florida. The snake successfully killed and ate the croc, swallowed the whole thing. The snake did win. But Florida is an unnatural environment for that snake species; it's not as warm as the snake's habitat in Southeast Asia. So the snake couldn't digest fast enough to keep the food from rotting. Once it started to rot inside the snake, the snake began to die. Its body split open because of that process, not because the croc was too large.
Back to Australia, after eating the Johnson's croc, how long might that olive python go without eating?
These are ambush predators, so the snake isn't likely to pass up another meal that came along. It would go relatively dormant for about ten days to digest, but over the next three weeks it would take what it could get. However, the caloric needs of that type of snake is pretty low. It could certainly go the rest of the season without a meal.
What parts of the croc can the snake use for energy?
All the bones, flesh, and organs are digested and used. A lot of scales will pass through, and the teeth, over the two to three weeks after the kill. Things with keratin and enamel aren't digestible, so they'll come back out.
I have seen such event in the forest part of Mindanao, Southern, Philippines, but unluckily I do not have a camera with me as I was on a hunting spree.
Congratulation to national geographic, which show us nature and the animals who are in it!!
In nature the strongest wins. Anyway it is well know i think that the python almost always wins over a croc.
This is incredible in my opinion, and it was this very morning that i saw another article somewhere completely different. Coincidence, i think not! This is just natural selection. It's the way things are
it's the law of nature: predators! it's their normal way of surviving - I think if present when this went on, it must be difficult to remain focused, even to snap a shot.
I hate it when people took time to look at stuff and take pictures of it and not do anything to help. In this case why did you let the poor snake die? I know it is dangerous but when a python just ate, it becomes harmless.
I would love to photograph something like that. I am from South Florida and we have had some problems with pythons.
Also, I hear that snake can swallow human being. It is scary that why snake can open big fat stretch mouth like rubber bands and powerful stop heart beat.
It is a good story to hear. The python kills by arresting and prevents the the arrested animal from breathing and it breaks down the skeleton system.
I have learned some much from this article. I knew that a snake would win in a battle like this because of of its environment and speed. Don't get me wrong but even if the crocodile had managed to free itself the snake would continue to attack until the crocodiles stamina was drained. Would have been interesting either if the crocodile had won; probably would have swallowed that snake in a few seconds.
@mao jason Hi Jason, this snake didn't die (at least no one reported that it did). This was just a natural predator-prey interaction.
@mao jason Mao, if humans stopped every predator from eating, the predators would die. I don't understand why you think people have to stop nature from proceeding. I DO understand the act of intervening and I've actually pulled frogs from the mouths of snakes and mice from cats, but that wasn't actually smart or reasonable of me, it was just acting on my human impulses as a nurturer. People aren't obligated to stop predators. Why do you think they are?
@ezekiel persaud cry baby; you eat chickens I/100 th. of your size don't you
Don't forget there are numerous different species of crocodiles all ranging in size. This particular species as an adult is 7-10 ft long with the larger ones reaching 70Kg, making the individual in this article a young croc
@Manuel Rita Boloy Jr. LOL... these politicians will rot inside the snakes and the snake will explode.......and hence the politicians cannot digested...LOL....LOL :)
@Maurice Jackson Hi there Maurice: I'm the author of the piece. The snakes eat their prey head first for this very reason! That way the prey's legs get pressed to its body as it goes down the snake's throat (relatively smoothly). Eating tail first would mean struggling to get around those appendages!
@Maurice Jackson Just everything crushed into small pieces.There is nothing solid anymore. ;)
@Carol Lovell-Saas Good point, Carol. We shouldn't be intervening in these natural events!
Breeding the remaining northern white rhinoceroses with their cousins may preserve some of their genes, scientists say.
A steady trickle of water is bringing wildlife back to a few parts of the Colorado River Delta.
After his death, Michel du Cille leaves a legacy of work distinguished by his ability to connect with his subjects.
The Future of Food
How do we feed nine billion people by 2050, and how do we do so sustainably?
We've made our magazine's best stories about the future of food available in a free iPad app.