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Dr. Rebecca Lewison

👤 Person
408 total appearances

Appearances Over Time

Podcast Appearances

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

In general, I think the only predator they really are concerned about is people. They're not worried about crocs. That's when crocodiles, that's the question that comes up. People ask, oh, you know, crocodiles eat baby hippos. Crocodiles do not stand a chance in the water. Oh, really? Mom hippos are extremely protective.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

as moms are in lots of places, that there's no chance that the crocodile's going to get them. I have seen lions taking down juvenile hippos, so I know that it happens, but I don't think it's particularly common.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

as moms are in lots of places, that there's no chance that the crocodile's going to get them. I have seen lions taking down juvenile hippos, so I know that it happens, but I don't think it's particularly common.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

as moms are in lots of places, that there's no chance that the crocodile's going to get them. I have seen lions taking down juvenile hippos, so I know that it happens, but I don't think it's particularly common.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

The one best friend I can think of is a really cool mutualistic relationships between hippos and oxpeckers. So if you see hippos that are out of the water or just partially submerged, you'll often see a particular type of bird that sits on them. It's called an oxpecker that actually eats like ticks and other insects. So the bird gets free lunch and the hippo gets cleaned.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

The one best friend I can think of is a really cool mutualistic relationships between hippos and oxpeckers. So if you see hippos that are out of the water or just partially submerged, you'll often see a particular type of bird that sits on them. It's called an oxpecker that actually eats like ticks and other insects. So the bird gets free lunch and the hippo gets cleaned.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

The one best friend I can think of is a really cool mutualistic relationships between hippos and oxpeckers. So if you see hippos that are out of the water or just partially submerged, you'll often see a particular type of bird that sits on them. It's called an oxpecker that actually eats like ticks and other insects. So the bird gets free lunch and the hippo gets cleaned.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

So that's definitely a friend. In terms of their social structure, I think they are really social animals themselves. We don't understand like who's related to who in those herds. Again, we can't barely tell them apart. And for most people, unless you spend a lot of time looking at hippos, you can't even tell males and females apart unless they open their mouths.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

So that's definitely a friend. In terms of their social structure, I think they are really social animals themselves. We don't understand like who's related to who in those herds. Again, we can't barely tell them apart. And for most people, unless you spend a lot of time looking at hippos, you can't even tell males and females apart unless they open their mouths.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

So that's definitely a friend. In terms of their social structure, I think they are really social animals themselves. We don't understand like who's related to who in those herds. Again, we can't barely tell them apart. And for most people, unless you spend a lot of time looking at hippos, you can't even tell males and females apart unless they open their mouths.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

Their canine teeth for the males are much thicker. Their head structure is different, but like they're not sexually dimorphic, right? Sometimes males and females are really different sizes or different colors. They're all gray. They're all fat. They're all really big and you really can't tell males and females apart when they're mostly submerged.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

Their canine teeth for the males are much thicker. Their head structure is different, but like they're not sexually dimorphic, right? Sometimes males and females are really different sizes or different colors. They're all gray. They're all fat. They're all really big and you really can't tell males and females apart when they're mostly submerged.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

Their canine teeth for the males are much thicker. Their head structure is different, but like they're not sexually dimorphic, right? Sometimes males and females are really different sizes or different colors. They're all gray. They're all fat. They're all really big and you really can't tell males and females apart when they're mostly submerged.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

Sometimes you'll see like creches, which is like groups of females and lots of offspring, like lots of calves, and they can play together in the water. But again, that's because there's these big groups where it's one dominant male and lots of females and their offspring.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

Sometimes you'll see like creches, which is like groups of females and lots of offspring, like lots of calves, and they can play together in the water. But again, that's because there's these big groups where it's one dominant male and lots of females and their offspring.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

Sometimes you'll see like creches, which is like groups of females and lots of offspring, like lots of calves, and they can play together in the water. But again, that's because there's these big groups where it's one dominant male and lots of females and their offspring.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

That is definitely true. There is so much of it. And we actually think that hippo poop, and not just the poop itself, but all of the compounds like silica and silicon that's in there, are really important nutrients for the water areas, the wetlands, the rivers, the lakes where they live. And there's some evidence that when hippo populations decline, fish populations also decline.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

That is definitely true. There is so much of it. And we actually think that hippo poop, and not just the poop itself, but all of the compounds like silica and silicon that's in there, are really important nutrients for the water areas, the wetlands, the rivers, the lakes where they live. And there's some evidence that when hippo populations decline, fish populations also decline.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

That is definitely true. There is so much of it. And we actually think that hippo poop, and not just the poop itself, but all of the compounds like silica and silicon that's in there, are really important nutrients for the water areas, the wetlands, the rivers, the lakes where they live. And there's some evidence that when hippo populations decline, fish populations also decline.

Ologies with Alie Ward
Hippopotomology (HIPPOS) with Rebecca Lewison

It is true that hippos, when we ask, like, where does a hippo poop? The answer is anywhere it wants. Mostly it is in the water. But with males, we do see that marking behavior. Another crazy thing. Ready for this?