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Capybara

life science Maturity 7-9

The capybara is a big rodent.

Hydrochoeris hydrochaeris in Brazil in Petrópolis, Rio de Janeiro, Brazil 09.jpg
Hydrochoeris hydrochaeris in Brazil in Petrópolis, Rio de Janeiro, Brazil 09.jpg
It lives near water. It eats green grass. It is a very good swimmer.
055 Capybara swimming in Encontro das Águas State Park Photo by Giles Laurent.jpg
055 Capybara swimming in Encontro das Águas State Park Photo by Giles Laurent.jpg
It likes to live in groups. Do you like to swim too?

56 words

The capybara is a very large rodent.

Hydrochoeris hydrochaeris in Brazil in Petrópolis, Rio de Janeiro, Brazil 09.jpg
Hydrochoeris hydrochaeris in Brazil in Petrópolis, Rio de Janeiro, Brazil 09.jpg
They live in South America. Most live near lakes or rivers.

These animals are great swimmers. They can stay under water for five minutes. This helps them hide from big cats.

Capybaras like to be with friends. They often live in groups of ten to twenty. Sometimes, a group can have one hundred animals.

Hydrochoerus hydrochaeris 222765566.jpg
Hydrochoerus hydrochaeris 222765566.jpg

They eat many kinds of plants. They like grass and plants from the water. They also eat fruit and tree bark.

They make many sounds to talk. They can bark, chirp, or whistle. It is fun to watch them play.

125 words

The capybara is the largest living rodent in the world.

Hydrochoeris hydrochaeris in Brazil in Petrópolis, Rio de Janeiro, Brazil 09.jpg
Hydrochoeris hydrochaeris in Brazil in Petrópolis, Rio de Janeiro, Brazil 09.jpg
These animals live in South America. They stay near lakes, rivers, and swamps. Capybaras are great swimmers. They can stay under water for five minutes. This helps them hide from predators like jaguars.
Parque estadual encontro das aguas - Gustavo Gaspari 03, auto white balance i.jpg
Parque estadual encontro das aguas - Gustavo Gaspari 03, auto white balance i.jpg

Capybaras are social animals. They usually live in groups of 10 to 20. Some groups can reach 100 animals during the dry season.

Hydrochoerus hydrochaeris 222765566.jpg
Hydrochoerus hydrochaeris 222765566.jpg
They use many sounds to talk. They can bark, chirp, whistle, or purr.

These rodents eat plants like grass and fruit.

Capybaras (Hydrochoerus hydrochaeris) grazing in the evening.jpg
Capybaras (Hydrochoerus hydrochaeris) grazing in the evening.jpg
They have special teeth that grow all the time. This helps them eat tough grass. They also eat their own waste. This helps them get vitamins from their food. In the wild, they live about four years. In zoos, they can live for 12 years.

176 words

The capybara is the largest living rodent in the world.

Hydrochoeris hydrochaeris in Brazil in Petrópolis, Rio de Janeiro, Brazil 09.jpg
Hydrochoeris hydrochaeris in Brazil in Petrópolis, Rio de Janeiro, Brazil 09.jpg
These huge animals live in most parts of South America. They can be found in dense forests and savannas. They must stay near bodies of water like rivers or swamps. This is because they are semiaquatic, which means they live both on land and in water. Being near water helps them find food and stay safe. They are very important to the ecosystems where they live.

Capybaras have a special way of eating and staying healthy. They are herbivores, so they eat plants like grass and fruit.

Capybaras (Hydrochoerus hydrochaeris) grazing in the evening.jpg
Capybaras (Hydrochoerus hydrochaeris) grazing in the evening.jpg
Their teeth grow continually to make up for wear from chewing. They also use a process called autocoprophagy. This means they eat their own feces to get extra vitamins. This helps them get the most protein from the grass. They even regurgitate food to chew it again, much like cattle do.
Capybara skeleton.jpg
Capybara skeleton.jpg

Scientists have studied these animals for a long time. Charles Darwin once called them the "water-hog."

Capybara (Hydrochoerus hydrochaeris) alpha male.JPG
Capybara (Hydrochoerus hydrochaeris) alpha male.JPG
The name capybara comes from the Tupi language. It means "one who eats slender leaves." Their scientific name, Hydrochoerus, comes from Greek words for "water" and "pig." Researchers use molecular studies to see how they are related to others. They found capybaras are closely related to rock cavies. This helps us understand how different animals changed over time.

There are many interesting facts about their bodies and lives.

Capivara(Hydrochoerus hydrochaeris).jpg
Capivara(Hydrochoerus hydrochaeris).jpg
An adult can weigh around 65 kilograms in the Venezuelan llanos. They have reddish-brown fur and slightly webbed feet for swimming. A capybara can hold its breath underwater for five minutes. They are very social and live in groups of 10 to 20. During dry seasons, these groups can grow to 100 animals. In the wild, they usually live about four years. However, they can live up to 12 years in captivity.

Capybaras use many tools to talk to their friends. They make sounds like barks, whistles, and even purrs. They also use scent to mark their territory. Males have a large bump on their snout called a morrillo. They rub this on objects to leave a smell behind. This is similar to how a dog might mark a tree. These smells help other capybaras know who is nearby. It helps the whole group stay organized and connected.

421 words

The capybara, or greater capybara (Hydrochoerus hydrochaeris), is the largest living rodent on Earth.

Hydrochoeris hydrochaeris in Brazil in Petrópolis, Rio de Janeiro, Brazil 09.jpg
Hydrochoeris hydrochaeris in Brazil in Petrópolis, Rio de Janeiro, Brazil 09.jpg
These large mammals are native to nearly all of South America, except for Chile. They are semiaquatic herbivores, meaning they live partly in water and eat only plants. They prefer habitats like savannas and dense forests that contain water sources. You can find them near lakes, rivers, swamps, ponds, and marshes. Because they rely on water, they are highly successful in tropical rainforests and flooded savannas.

To survive in these wet environments, the capybara has several specialized physical traits. They have heavy, barrel-shaped bodies covered in reddish-brown fur. Their underside is usually a lighter yellowish-brown. They possess slightly webbed feet to help them move through water. Their hind legs are longer than their forelegs, and they have three toes on their rear feet.

Capybara skeleton.jpg
Capybara skeleton.jpg
Their eyes, ears, and nostrils are located near the top of their heads. This placement allows them to see, hear, and breathe while mostly submerged. They are superb swimmers and can hold their breath underwater for up to five minutes. This ability is a vital defense against predators.

Capybaras are highly social animals that thrive in organized groups. Usually, they live in groups of 10 to 20 individuals. These groups typically include two to four adult males and four to seven adult females. During the dry season, when water sources become scarce, these groups can swell to 100 individuals.

Hydrochoerus hydrochaeris 222765566.jpg
Hydrochoerus hydrochaeris 222765566.jpg
Within these groups, males establish social bonds and dominance. They use various vocalizations to communicate, such as barks, chirps, whistles, huffs, and purrs. Males also use scent to communicate. They have a scent gland on their snout called a morrillo. They also have anal glands used for scent-marking objects or other capybaras.

Dietary needs drive many of the capybara's unique behaviors. They are very selective feeders, choosing specific plants while ignoring others. They primarily eat grasses and aquatic plants, but they also consume fruit and tree bark. During the wet season, grass is their main food. In the dry season, they switch to more abundant reeds.

Capybaras (Hydrochoerus hydrochaeris) grazing in the evening.jpg
Capybaras (Hydrochoerus hydrochaeris) grazing in the evening.jpg
To get maximum nutrition, they practice autocoprophagy. This means they eat their own feces to obtain bacterial gut flora. This process helps them digest cellulose and extract essential proteins and vitamins. They also regurgitate food to chew it again, a process similar to how cattle chew cud.

Because their diet is so tough, capybaras have specialized teeth. Their front teeth and their cheek teeth grow continually throughout their lives. This growth compensates for the constant wear caused by eating abrasive grasses. Their jaw hinge is not perpendicular, which allows them to chew by grinding food in a back-and-forth motion. Like guinea pigs, capybaras cannot synthesize vitamin C. If they do not get enough vitamin C in captivity, they can develop scurvy, a disease that causes gum issues.

History and science have helped us understand the capybara's place in nature. The name "capybara" comes from the Tupi language, meaning "one who eats slender leaves." The scientific genus name, Hydrochoerus, combines Greek words for "water" and "pig."

Capybara (Hydrochoerus hydrochaeris) alpha male.JPG
Capybara (Hydrochoerus hydrochaeris) alpha male.JPG
Famous naturalist Charles Darwin once referred to them as the "water-hog." Modern molecular phylogenetic studies have clarified their family tree. These studies show that capybaras are closely related to rock cavies, a group called Kerodon. This has changed how scientists classify these animals within the subfamily Hydrochoerinae.

In the wild, capybaras face many dangers from predators. They are hunted by South American cats like jaguars, ocelots, and cougars. They are also preyed upon by eagles, caimans, and green anacondas. Because of this pressure, wild capybaras usually live only four years. However, they can live up to 12 years in captivity.

Capivara(Hydrochoerus hydrochaeris).jpg
Capivara(Hydrochoerus hydrochaeris).jpg
Their population remains stable, though humans sometimes hunt them for meat, hide, or grease. They have also adapted well to urban areas in South America, where they can be found in parks and zoos.

681 words
🖼️ Images & Media (11)
File:Hydrochoeris hydrochaeris in Brazil in Petrópolis, Rio de Janeiro, Brazil 09.jpg
Hydrochoeris hydrochaeris in Brazil in...
File:Capybara skeleton.jpg
Capybara skeleton.jpg
File:055 Capybara swimming in Encontro das Águas State Park Photo by Giles Laurent.jpg
055 Capybara swimming in Encontro das...
File:Yellow-headed caracara (Milvago chimachima) on capybara (Hydrochoeris hydrochaeris).JPG
Yellow-headed caracara (Milvago...
File:Capybaras (Hydrochoerus hydrochaeris) grazing in the evening.jpg
Capybaras (Hydrochoerus hydrochaeris)...
File:Parque estadual encontro das aguas - Gustavo Gaspari 03, auto white balance i.jpg
Parque estadual encontro das aguas -...
File:Hydrochoerus hydrochaeris 222765566.jpg
Hydrochoerus hydrochaeris 222765566.jpg
File:Capybara (Hydrochoerus hydrochaeris) alpha male.JPG
Capybara (Hydrochoerus hydrochaeris)...
File:Capivara(Hydrochoerus hydrochaeris).jpg
Capivara(Hydrochoerus hydrochaeris).jpg
Capybara Ueno Zoo 2009.ogv
File:Hydrochoerus hydrochaeris (54906494753).jpg
Hydrochoerus hydrochaeris (54906494753).jpg
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