Lagomorpha

The lagomorphs are a special group of animals known as the order Lagomorpha. This group includes familiar creatures like rabbits, hares, and pikas. The name "lagomorph" comes from ancient Greek words for "hare" and "form," showing how these animals look and move.

There are two main families of lagomorphs. The Leporidae family includes rabbits and hares, while the Ochotonidae family is home to pikas. In total, there are about 110 different species of lagomorphs today. Most of these are rabbits, with many kinds of hares and just one type of pika.

Lagomorphs are interesting because they have unique features that help them survive. For example, rabbits and hares have strong hind legs for hopping, and pikas are small animals that make loud calls to stay safe. These animals live in many parts of the world, from forests to deserts, making them important parts of many ecosystems.

Etymology

The name "lagomorph" comes from two Ancient Greek words: lagos (λαγώς) meaning 'hare' and morphē (μορφή) meaning 'form'. This name describes animals that look like a hare. The term was first used in the 19th century by a German scientist named Johann Friedrich von Brandt in 1855. Later, in 1912, an American scientist named James W. Gidley grouped rabbits, hares, and pikas into a category called "Lagomorpha". Before that, they were thought to be rodents.

Taxonomy and evolutionary history

Lagomorphs include animals like rabbits, hares, and pikas. They were first described as a special group in 1811 because of their unique teeth, which have four upper incisors. Over time, scientists have used many different names for this group before settling on "Lagomorpha."

We are still learning about their evolutionary history. Some early ideas pointed to Eurymylus as an ancestor, but newer studies suggest they may have come from mimotonids, small mammals from Asia. Rabbits began appearing in the late Eocene and quickly spread, while pikas showed up later in the Oligocene. In the past, there were many more types of lagomorphs than there are today.

Characteristics

Lagomorphs are a group of mammals that includes rabbits, hares, and pikas. They have fur, four limbs, and mammary glands like all mammals. They are warm-blooded and have a different skull shape from other small mammals.

One big difference between lagomorphs and rodents is their teeth. Lagomorphs have four upper incisors, while rodents have only two. Their incisors grow continuously, so they need to eat a lot of plants to keep their teeth short. Lagomorphs only eat plants. They also have fur on the bottoms of their paws and their females are usually larger than their males.

Differences between families of lagomorphs

Main article: Pika

Main article: Hare

Main article: Rabbit

Pikas are small mammals that live in the mountains. They have greyish-brown fur and very short tails. Some live among rocks, while others live in burrows. They collect and store dried plants for winter food.

Hares are larger and have long legs and ears. They live in many parts of the world and can sometimes turn white in winter. Their babies can see and move around right after they are born.

Rabbits are usually smaller than hares and often live in burrows. Their babies are born with their eyes and ears closed and no fur. Rabbits are important food for many predators.

Distribution

Lagomorphs, such as rabbits, hares, and pikas, live on every continent except Antarctica. They do not live in the West Indies, Madagascar, or many islands. Humans brought rabbits and hares to Australia, where they have spread widely. European hares have also been introduced and now live in much of the southern cone of South America.

Biology

Many lagomorphs, such as rabbits and pikas, have special ways to get nutrients from their food. They eat something called cecotropes, which help them get more nutrients.

Rabbits and pikas can have many babies several times a year. Their young, called kits, are born after a short time and grow quickly. Hares, called leverets when young, are born after a longer time and have fewer babies in each litter. Both rabbits and hares have ways to keep their babies safe.

Classification

Lagomorphs are animals that include rabbits, hares, and pikas. They belong to the order Lagomorpha. There are two main families: Leporidae, which includes rabbits and hares, and Ochotonidae, which includes pikas.

Today, there are many species of lagomorphs. Most of these are rabbits, hares, or pikas. Some of these animals are no longer alive.