Hippo Flashcards

1
Q

Is the hippopotamus in a monotypic genus?

A

Yes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does hippopotamus mean in Greek?

A

River horse.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the only two groups of land animals that are larger than the hippopotamus?

A

The rhinos and the elephants.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What group of animals are the closest relatives of the hippo?

A

Cetaceans.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How long ago did hippos diverge from cetaceans?

A

55 million years ago.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

When did the earliest known hippo emerge?

A

16 million years ago.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How much does the average male hippo weigh?

A

3,500 pounds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How fast can a hippo run?

A

20 mph

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the conservation status of the hippo?

A

Vulnerable.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the main threats to the hippo?

A

Poaching, habitat loss, and pollution.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What parts of the hippos are poached?

A

The meat and the ivory canine teeth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the range and habitat of the hippo?

A

Rivers, lakes, and swamps in all but Northern Africa.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the average size of a hippo group?

A

30

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What do hippos do during the heat of the day?

A

They sit in mud or water.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When do hippos come out to graze?

A

Dusk.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

True or false? Hippos graze in groups.

A

False.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is a group of hippos called?

A

A pod.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the Swahili word for hippo?

A

Kiboko.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How many subspecies of hippo are there?

A

5.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is a nominate subspecies?

A

The original subspecies.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What animals did scientists group hippos with until 1909?

A

Pigs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What pieces of evidence showed that hippos shared a lineage with cetaceans?

A

Blood proteins, DNA, and the fossil record.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the oldest known hippopotamus?

A

The Kenyapotamus.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

When did the Malagasy hippopotamus go extinct?

A

1,000 years ago.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

When did the European hippopotamus go extinct?

A

At the end of the last ice age.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

How much did the largest hippo ever weigh?

A

3 tons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Male hippos grow throughout their lives, but females cap out at what age?

A

25.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Why are the legs of the hippo so small compared to those of many other large animals?

A

Because the water supports their body most of the time.

29
Q

Can the hippo swim or float?

A

No.

30
Q

Can hippos jump?

A

No.

31
Q

Why is the hippo rarely found in deep water?

A

It needs to move by running or leaping on the river bed.

32
Q

what is a massester?

A

The muscle responsible for mastication.

33
Q

Why can hippos open their jaws so wide?

A

Their jaw hinge is located very far back.

34
Q

Haw long are the canines of a hippo?

A

1.5 feet.

35
Q

Why are the canines of a hippo so long?

A

They are used for combat.

36
Q

What does the hippo use to pull grasses?

A

Its rough lips.

37
Q

True or false? The hippo is a pseudoruminant.

A

True.

38
Q

How thick is the skin of the hippo?

A

Six inches.

39
Q

Is the layer of fat beneath the hippo’s skin thick or thin?

A

Thin.

40
Q

What is blood sweat?

A

It is a reddish-brown substance that hippos secrete as a natural sunscreen.

41
Q

What is blood sweat made from?

A

Acid.

42
Q

What purpose does blood sweat have besides protecting the hippo from the sun?

A

It kills bacteria.

43
Q

How long does a hippo live on average?

A

50 years.

44
Q

How many hippos are currently left?

A

150,000

45
Q

Who are generally considered to be the most likely culprits of poaching within the Congo?

A

Rebels, soldiers, and militia groups.

46
Q

What country has a population of feral hippos?

A

Columbia.

47
Q

Who was the Columbian drug lord that introduced hippos to Columbia after they escaped his menagerie?

A

Pablo Escobar.

48
Q

True or false? Hippos give birth in the water.

A

True.

49
Q

How many pounds of grass can a hippo eat per night?

A

150 pounds.

50
Q

What do hippos eat?

A

Grasses and aquatic plants.

51
Q

Hippos have occasionally been observed eating carrion. what is the theory for this strange occurrence?

A

Nutritional stress.

52
Q

How do hippos affect vegetation and geography?

A

They often travel the same paths, which can lead to depressed vegetation and ground. Over time, this can change the paths of channels and swamps.

53
Q

How fast can the hippo move in the water?

A

5 mph.

54
Q

How long can a hippo hold its breath?

A

5 minutes.

55
Q

True or false? Hippos cannot sleep underwater because they will drown.

A

False. They instinctively rise while still sleeping.

56
Q

How do hippos clean themselves of bugs and parasites?

A

They open their mouths and birds or fish will enter and clean the inside.

57
Q

How old are hippos when they are mature?

A

Six.

58
Q

What is the gestation period of the hippo?

A

Eight months.

59
Q

How long and heavy are baby hippos?

A

100 pounds and four feet long.

60
Q

How many calves do hippos usually have?

A

One.

61
Q

True or false? No one is completely sure when hippos mate.

A

True.

62
Q

What are the two most common reasons for a hippo to attack a human?

A

Defending territory or protecting their calves.

63
Q

How does the hippo warn that it is about to attack?

A

It “yawns”

64
Q

True or false? Hippo fights usually result in death.

A

False. The battle usually ends as soon as it is clear that one is stronger.

65
Q

How old is the oldest piece of hippo art?

A

160,000 years

66
Q

What did many Zulu warriors consider to be the bravest animal?

A

The hippo.

67
Q

How do hippos mark their territory?

A

They defecate and then use their tail to fling it everywhere.

68
Q

What is a the term for a set of weak opening moves in chess?

A

A hippopotamus defense.

69
Q

What is an ungulate?

A

A hoofed mammal.