Episode 101 · July 10, 2021
We, Being Elephant People?
A host asks why every animal isn't an elephant, given that they're huge, smart and have almost no predators.
“Why can't we all just be elephants?” (04:44)
Questions
Why isn't every animal an elephant, since they are big, smart and have no real predators? (00:31)
Our guess
Resource limits and slow reproduction, ecosystem diversity, and humans hunting big animals.
Resource limits and slow reproduction, ecosystem diversity, and humans hunting big animals.
Reveal the answer
The answer
No single answer. Elephants gestate for about two years and have one calf at a time, and their calorie demands cap population growth. Different species use different survival strategies (many offspring vs. few), and ecosystems depend on diversity. Humans are now the main predator of elephants.
No single answer. Elephants gestate for about two years and have one calf at a time, and their calorie demands cap population growth. Different species use different survival strategies (many offspring vs. few), and ecosystems depend on diversity. Humans are now the main predator of elephants.
Verdict unresolved
Transcript (auto-generated)
[00:00] I want to know if we've got an under-googable, [00:03] I'm going to cleanse my palate a little bit. [00:12] Should we do an under-googables? [00:13] That was the play of it. [00:15] I'm super excited. [00:16] You told us we had to, sir. [00:19] You said we signed up for it. [00:23] In the end, it's going to be better and more true [00:25] than Google can give you. [00:28] I'm going to work my noggin a little bit. [00:31] So I don't know if this one has an answer, really. [00:37] But it's just something I want to talk about. [00:41] I don't know if this is under-googable. [00:42] Probably is. [00:46] Was talking to somebody this week and said [00:52] that I was told that elephants do not have natural predators. [01:02] And I started thinking to myself, elephants are super smart. [01:08] They've got this super cool trunk [01:12] that does all this stuff. [01:18] They're really community-based. [01:23] They take care of their own. [01:26] I guess I want to know why every animal isn't an elephant. [01:32] Hm? [01:33] Can you rephrase that question? [01:39] All right. [01:39] I mean, I guess I went down this rabbit hole [01:43] and I was thinking, OK, there was a time where [01:46] the dinosaurs, where things are just really big. [01:52] And then they died out. [01:54] And mammals survived the apocalypse [02:01] for different reasons. [02:02] They were smaller, and they had fur, [02:04] and they could deal with the Ice Age, whatever. [02:08] So I get why dinosaurs died out. [02:10] But it seems to me that if you're really big [02:14] and nobody can come kill you and you also take care of yourself [02:19] and also you're really smart and you have a cool trunk, [02:23] that's really the way to go. [02:25] Why isn't everything elephants, is my question. [02:31] Well, so yes, I guess you're right. [02:36] Blue whales are similarly just gigantic [02:39] and have no predators. [02:42] So apparently, if you're sick or your baby [02:46] gets out of the herd, a starving animal, [02:50] I looked this part up because I got really interested. [02:52] When somebody told me this, like a jackal or a lion [02:55] or whatever, we'll try to take the baby or a sick elephant. [02:58] But only starving animals because they [03:00] know that it's dumb to screw with elephant herds [03:03] because they'll just get trampled and killed and stuff. [03:06] And they always try to encircle their sick [03:08] and they're young anyway. [03:10] So also same thing with alligators. [03:12] They just get messed up by elephants. [03:15] In general, they're good. [03:17] Nothing's messing with them. [03:19] They live a long time. [03:20] They're super smart. [03:21] They're super caring for their own community. [03:25] Why isn't everything elephants? [03:29] Well, I mean, perhaps given enough time, [03:35] things would go back to being huge, large things [03:41] like they were in a Jurassic period or whatever. [03:50] But I mean, the reasons that things aren't always [03:54] the same is because diversity egg is an advantage [03:59] or the ability to diversify. [04:03] And other animals have found success. [04:07] So once you have success and you have a species that [04:12] can propagate itself and whatnot, you're [04:17] just going to continue to have that natural diversity. [04:21] I mean, I understand that it's kind of a stupid question. [04:24] Because clearly evolution, you have lots of different things [04:27] that survive and have success. [04:30] I mean, insects, they're freaking everywhere. [04:34] And they're the smallest thing. [04:36] I get that. [04:38] But my little rabbit, she's got zero protection at all. [04:44] She's fast. [04:46] But a lot of things will eat her. [04:49] I mean, she didn't have a tough skin. [04:51] She's a crayon. [04:52] She's not big, exactly. [04:54] But so I mean, and I get, but you know, she. [04:58] What does that world look like when everything [05:01] has nothing that can? [05:04] Well, I'm just saying, why aren't we all just elephants, right? [05:07] Like, why can't we all just be elephants? [05:08] We all just take care of each other. [05:10] We're super smart. [05:10] We got trunks. [05:11] We, you know, nothing can kill us. [05:14] That's cool. [05:16] Like, why isn't elephants more things? [05:19] So a lot of this comes, a lot of this [05:22] comes down to resources and reproduction, right? [05:25] So sure. [05:27] Elephants are gigantic animals that [05:29] have one offspring at a time. [05:31] Yeah. [05:31] Right. [05:32] And it's a long, it's a long incubation period, correct? [05:37] They gestate for two years. [05:39] Two years, OK. [05:40] So all this requires massive caloric intake, right? [05:44] OK. [05:46] So the speed at which the population can grow, [05:50] it just has a very distinct ceiling [05:53] based upon what its environment can support, right? [05:56] OK. [05:58] So I need more. [06:00] I mean, we just need to eat more stuff. [06:04] We being elephant people? [06:06] Yeah. [06:08] So for humans to become elephants. [06:13] How do we get there? [06:14] Yeah. [06:15] We've got to eat more leaves, I think. [06:17] Sure. [06:18] No, I mean, yeah. [06:19] Like, I think that it's every species has their own strategy, [06:24] if you will, for survival and propagation of species. [06:28] Like your rabbit, their strategy is somewhere [06:33] in between an elephant and an insect, right? [06:37] So insects just have tons and tons and tons of offspring, [06:41] right? [06:42] Right. [06:42] Like, that's their strategy. [06:43] And most of them are going to die. [06:45] And then they'll live for like 24 hours, [06:49] and then they have more babies or whatever, right? [06:52] And rabbits, similarly, like they have large litters, right? [06:57] So they don't invest a ton. [06:59] I mean, they do because they're mammals. [07:01] They invest a ton of energy and sort of reproduction [07:05] and whatnot. [07:07] But they also just have a bunch of them [07:09] because they know that like half of them [07:11] aren't going to make it. [07:13] Or they don't actually know this, but whatever. [07:15] Their species has been refined. [07:17] Right, exactly. [07:18] So like sort of go with that strategy or whatever. [07:22] So OK, but like I guess it works. [07:25] It does work. [07:26] There's a ton of rabbits. [07:27] But like I guess on some level, [07:29] I guess it's sort of a larger conversation about why [07:34] are things not larger, you know? [07:36] I mean, on some level, the idea if you're a small rabbit [07:42] and you just have lots of offspring [07:44] and you can run fast is one strategy. [07:47] But like also being really big is also another strategy. [07:52] So it's weird to me that there's not more large things, I guess. [07:55] I mean, there's one argument is that we killed them all. [07:58] OK, like the buffalo. [08:01] Yeah, woolly mammoths. [08:03] Like we just killed all that stuff because it was. [08:05] Because they had lots of meat. [08:07] Yeah, exactly. [08:07] It was efficient for us. [08:09] So we killed off lots of big things. [08:11] OK. [08:13] Because even though we weren't the largest animal, [08:16] we became the best hunters. [08:18] Right. [08:18] And we're the biggest predator to elephants at this point [08:22] and now, right? [08:23] We're their only natural predators, actually. [08:26] Right. [08:29] Right. [08:30] Right. [08:31] Yeah, and we almost fished the blue whale out of existence, [08:35] right? [08:36] It's just how we roll. [08:37] We're fascinated by big things. [08:40] Yeah. [08:41] And they do provide lots of meat. [08:45] Yeah, although we never ate blue whales, [08:46] we were just in it for like oil. [08:49] For the challenge. [08:50] The blubber. [08:51] Yeah. [08:52] For the blubber. [08:53] Get to the blubber. [08:56] Get to the blubber. [09:01] My documentaries are pretty exciting. [09:05] Do we know why dinosaurs were ginormous? [09:12] I guess because there were fewer predators at that point [09:18] that could take them down or whatever. [09:20] Or is that even true or is that a falsehood in my brain [09:24] that like dinosaurs are huge, where in fact, most of them, [09:28] you know, whatever. [09:31] Normal, quote unquote, normal size or whatever. [09:33] Chicken size. [09:34] Right. [09:35] Yeah. [09:36] I mean, there certainly were a lot of those, which, you know, [09:39] because they were living on, you know, [09:44] the wealth of vegetation during a warm wet period [09:47] and, you know, geologic history. [09:51] They then created food for larger meat eating things. [09:56] Right. [09:57] And like insects were ginormous as well. [09:59] Yeah. [10:00] So that like it's just there's just more fuel around. [10:03] Yeah. [10:04] Seemed to be the case. [10:07] Until like asteroid. [10:09] Right. [10:10] Yeah. [10:11] So if you've got like a brontosaurus or a brachiosaurus [10:14] or like even like a triceratops, right, which is like, [10:16] was that the size of an elephant? [10:19] Sure. [10:20] Size of a ford, I think. [10:24] Big ford. [10:24] It's Bill Ford tough. [10:25] Bill Ford tough. [10:30] And then you don't and you only have a few large meat [10:36] eating animals, right? [10:37] Like you have the T-Rex and then the Aladon or whatever. [10:43] Velociraptor. [10:45] Velociraptor. [10:45] But those guys are small, right? [10:47] Are they taking down a brontosaurus? [10:51] I doubt it. [10:52] I don't think much was taken down a brontosaurus. [10:54] Right. [10:55] Yeah. [10:55] It's sort of like the modern elephant on some level, [10:57] right? [10:59] Somewhere in between that and a blue whale [11:00] then it's been like 80% of its life in water or something. [11:03] Oh, that's a fun fact. [11:07] I don't know if it's a fact. [11:08] It's a fun supposition. [11:11] Is the brontosaurus the one that got renamed? [11:14] Yeah. [11:14] The Allosaurus or something? [11:16] No, I thought the Allosaurus was the, [11:19] it's like a Tyrannosaurus, but just has a longer bill [11:24] and more like alligator type teeth. [11:25] Yeah. [11:26] I think they call it the brachiosaurus now. [11:28] Brachiosaurus. [11:29] OK, gotcha. [11:30] I felt like when I was a kid, they would always, [11:32] you know, I'd learned my dinosaurs, which [11:35] I was very interested in. [11:37] And then every so often, I would [11:38] read some story about this, like, oh, [11:40] that one that you thought was big, [11:42] we found one that's like 50 times bigger. [11:44] Right. [11:44] And that happened like every couple of years [11:46] that there was one that was just, [11:48] that dwarfed the previous biggest one. [11:52] Yeah. [11:53] Yeah. [11:54] And then there was like Megalodon or something. [11:57] Yeah. [11:57] Zugliodon. [11:59] Yeah. [12:01] Jigglyodon. [12:03] And then there was a, what was the Jurassic Park, [12:05] Jurassic World thing, the combo? [12:10] They made that up, though. [12:13] Come on. [12:15] Felt so true. [12:16] That was based on a real eight-year-old's story. [12:19] That's right. [12:20] They got to write. [12:21] Nightmare fever dream. [12:26] Well, I think to get back to your original question, [12:28] if everything's an elephant, then there's not [12:30] enough diversity. [12:32] Sure. [12:33] Then, you know, then these humans pop up [12:35] and they just kill all of them. [12:36] Or, you know, pick another. [12:39] Or, yeah, the, I suppose, the flora and fauna [12:45] probably has trouble surviving if. [12:49] Right. [12:49] Yeah, the elephants are just foraging everything. [12:52] Right. [12:53] That's right. [12:53] That's right. [12:56] So it's all a delicate balance. [13:00] Right. [13:01] And ecosystems are at their best if there's [13:05] a diversity of things going on, right? [13:08] So that way, if any one thread gets pulled, [13:12] then other things can survive, right? [13:16] Yeah. [13:16] If everything's hunting one thing, that thing will just die. [13:19] Right. [13:20] And then it's gone. [13:22] Yeah. [13:23] Unless it gets adopted and put in somebody's apartment [13:26] and then given a bell. [13:27] That's correct. [13:30] Just throw out examples. [13:32] Sure. [13:36] You look at some of these animals and like some [13:38] of these dogs and it's like, how are you [13:41] going to survive out in the wild? [13:43] Yeah, no. [13:43] Evolution did not do that. [13:45] We did that. [13:47] We made teacup dogs. [13:50] Fits in a purse. [13:54] That's our fault. [13:54] I feel like you look at those dogs. [13:56] I've done this before is one of these little dogs [14:01] is like just acting out of line. [14:04] You just look at them as like, I'm the only reason you're [14:07] not dead right now. [14:09] I'm keeping you from the grave. [14:13] Is that the only way I don't get it? [14:15] I was going to say, is that there's nothing. [14:17] Kind of a stern talking to you there, Joey. [14:19] Yeah. [14:22] Yeah, one of the reasons they wouldn't do well in the wild, [14:24] they're pretty dumb. [14:29] Apparently, my information on sauropods is outdated as well. [14:32] They were probably almost wholly terrestrial. [14:37] OK. [14:41] Sauropods. [14:42] Which one did we used to call that one? [14:43] Was that the brachosaurus? [14:45] It's like the family in which, yeah, brachiosaursus. [14:50] Brachiosaursus. [14:52] Probably brachiosaursus back then. [14:54] Man, there's hell of a dinosaur. [14:58] Things changed since I was a kid. [15:01] Yeah. [15:05] When I was a young man, I spent a lot of time [15:07] reading about these guys. [15:09] Akylosaurus. [15:13] And sometimes, you know, they realized at some point [15:18] that this thing that they thought existed [15:21] was actually two different species that just happened [15:24] to have their bones together. [15:25] Yeah, right. [15:26] Oh, yeah, by the way, that was not even close. [15:30] Here's two boring creatures. [15:35] Well, I mean, I guess the point of this [15:37] is that the elephant is the modern day dinosaur. [15:43] Is that what we learned? [15:44] What way? [15:45] I did not learn that. [15:47] Just because it's big? [15:50] Yeah. [15:51] OK. [15:52] Sure, I learned that. [15:55] Brontosaurus was named in 1879. [16:00] After Emily Bronte, actually, fun fact. [16:04] Really? [16:05] No. [16:06] Oh, gummy. [16:14] Yay, look at these artists' renditions [16:16] of dinosaurs these days. [16:18] And you really see the connection to birds. [16:21] Yeah, apparently, lots of them were fluffy. [16:24] Yeah. [16:26] Maybe even T-Rex. [16:27] And lots of them, like, look like T-Rexes. [16:29] Yeah, like, they have these short arms and, like, it's crazy. [16:35] So Apatosaurus, I think, was the brontosaurus. [16:41] Eats puzzle grass. [16:43] Because he has an Apatosaurus. [16:46] I'm sorry. [16:48] Interesting. [16:50] They weighed from between 36 and 49,000 pounds. [16:55] Whoa, that is a wide range. [16:58] Oh, wait, no, 36,000 to 40. [17:01] Oh, yes, 36,000 and 49,000. [17:07] One of the stats on there is what it was eaten by. [17:11] It was a Torvosaurus, which I'm not familiar with. [17:15] But it looks kind of like a slimmed-down T-Rex. [17:22] They're only about 8 or 9, 8 to 10,000 pounds. [17:28] Yeah, 33 feet long now. [17:31] Yeah, 33 feet long. [17:34] Torvosaurus. [17:35] It was a genus of a carnivorous megalosauroid theropod. [17:46] When I was in high school, I drove around a Ford Taurusaurus. [17:52] It is time to get going. [17:56] Do we answer your question? [17:58] It was Ford Strong. [18:00] It was Ford Tough. [18:02] I screwed up their motto. [18:05] Oh, Ford is no longer going to be a sponsor. [18:08] And there goes all that sweet endorsement money [18:11] calls and things. [18:12] Just lost that Ford money. [18:16] Oh, no. [18:18] I love this sentence. [18:19] So they lived, the Torvosaurus lived approximately 153 [18:23] to 148 million years ago during the late Jurassic [18:25] period in what is now Colorado and Portugal. [18:38] Plate tectonics are weird. [18:41] Something crazy went down. [18:47] The Majungasaurus? [18:50] Ooh. [18:51] Yeah, apparently, we're running out of names for dinosaurs [18:53] because there were so many. [18:55] Majungasaurus. [18:59] I mean, that doesn't sound right. [19:02] Large theropod. [19:03] Ooh. [19:03] There's the afrovanator. [19:06] I like that one. [19:09] Afrovanator? [19:10] Yeah, A-F-R-O-V-E-N-A-T-O-R. [19:13] Whoa, look at that guy. [19:16] It all happened after I was a kid. [19:19] Right. [19:19] I used to have flashcards, dinosaurs, back in the day. [19:23] A little like a library index. [19:27] Male nurse. [19:31] But I did not have the afrovanator in there. [19:36] Because it didn't exist. [19:38] Yep. [19:40] I mean, it did. [19:40] We just didn't know about it. [19:42] Right, it didn't exist. [19:45] If the afrovanator lives in the woods, [19:49] but nobody knows about it, does it exist?