Hippopotamus
Hippopotamus amphibius
Hippopotamus (Hippopotamus amphibius) — Africa's Chunky River Tanks
Discover the Hippopotamus (Hippopotamus amphibius), Africa's iconic river horse that lounges submerged by day and grazes grasslands by night with surprising grace.
- Habitat
- Rivers, lakes, and swamps in sub-Saharan Africa
- Size
- 10.8–16.5 ft long, up to 9,920+ lb
- Diet
- Grasses and reeds, ~88 lb per night
- Range
- Sub-Saharan Africa
- Conservation
- Vulnerable
- Social Group
- Pods of 10–30
Habitat & range
The Hippopotamus thrives across sub-Saharan Africa in rivers, lakes, and swamps from Angola to Zimbabwe, with prime real estate in East Africa. These semi-aquatics demand deep water for daytime submersion and adjacent grasslands for nighttime foraging, skipping rainforests unless a solid river cuts through. Their range keeps them tied to reliable water sources that let them stay cool and protected.
Diet & foraging
Strict herbivores through and through, hippos emerge at night to munch roughly 88 pounds of grass and reeds per session. That equals just 1–1.5 percent of their hefty body weight, letting them conserve energy for long aquatic siestas. Their efficient grazing keeps them fueled without ever needing to hunt.
Behavior & adaptations
Hippos form social pods of 10–30 led by a dominant male, spending days wallowing to shield sensitive skin and nights trekking familiar paths to graze. High-set eyes, ears, and nostrils plus sealable nostrils and a bob-up reflex let them snooze underwater for five-plus minutes. They walk or gallop along riverbeds rather than swim, while their red-orange "blood sweat" doubles as sunscreen and antibacterial armor. On land they can hit 19 mph when motivated, and males mark turf with dramatic dung-flinging using their fan-shaped tails. Hippopotamus appears as a Mammalia creature card in Wilder TCG.
Conservation
Listed as Vulnerable since 2006, hippo numbers hover around 115,000–130,000 and face pressure from habitat loss, water diversion, and occasional poaching. Protected waterways remain essential for their continued success as ecosystem engineers that shape channels and fertilize waters with dung.
Fun facts about Hippopotamus
- Their "blood sweat" is neither blood nor sweat—it's a red-orange acid cocktail that blocks UV and fights bacteria like built-in sunscreen.
- Hippos sleep underwater thanks to an automatic bob-up-for-air reflex, holding breath for five minutes or more without waking.
- Closest relatives are whales and pigs, not horses—the "river horse" name is pure ancient marketing fluff.
- They can go three weeks without eating by storing grass in the stomach, though they rarely test this limit.
- Hippos produce the only truly amphibious mammal calls, honking at 115 decibels both above and below water.
Hippopotamus vs African Lion
The hippopotamus wins with superior size, bite force, and water-territory advantage.
On an African riverbank at dusk, a lion pride spots a lone hippo grazing near shallow water. The lioness stalks close, but the hippo detects the threat and bolts back toward the river with surprising speed for its bulk.
Once in the shallows the hippo turns, mouth agape to reveal tusk-like canines. The lion leaps for the neck but meets thick hide and a sudden sideways lunge. One crushing bite from the hippo sends the cat tumbling, forcing a quick retreat to avoid deeper water where the hippo holds total control.
Mammalia · Water · Cost 6
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