Vole

A vole is a small animal.

Voles eat many things. They like to eat small plants and roots. They also eat nuts and fruit.

These animals are great at digging. They make tunnels in the ground. This helps move nutrients through the soil.

Many animals hunt voles. Owls and hawks look for them. Foxes and snakes eat them too.

Some voles live in pairs. They stay together to raise babies. They even comfort each other.

Voles are small rodents. They are relatives of lemmings and hamsters. They have stout bodies and hairy tails. Their heads are round. They have small eyes and small ears. There are about 155 different vole species.

Voles grow very fast. A single pair can make 100 babies in one year. This happens because they can have many litters. Small voles often live only three to six months. Larger ones, like the water vole, live longer.

These animals love to eat plants. They eat roots and bulbs. They also eat nuts and fruit. Voles are great at digging tunnels. This helps move nutrients through the soil.

Many animals hunt voles. Owls, hawks, and foxes eat them. Even snakes and cats hunt them. Some voles are very kind to each other. Scientists found that voles comfort each other. They do this using oxytocin. Oxytocin is a hormone that helps with empathy. This shows voles can feel for others.

Voles are small rodents that belong to a group called Arvicolinae. This group includes other animals like lemmings and muskrats. While they look like mice or rats, they have different features. Voles have stouter bodies and longer, hairy tails. Their heads are rounder with smaller eyes and ears. They also have teeth called molars that are high-crowned with angular cusps.

These little animals can grow their populations very quickly. A single mating pair can produce 100 offspring in just one year. This happens because females can have five to ten litters every year. The gestation period, or the time a baby grows inside the mother, lasts three weeks. Young voles reach adulthood in only one month. Because they grow so fast, vole numbers can become very large in a short time.

Scientists study voles to learn about how animals act in groups. The prairie vole is a famous model for monogamy. This means the male is usually faithful to one female. He even helps to raise the pups. In contrast, the meadow vole has males that mate with many different females. Researchers once used a viral vector to change a gene in meadow voles. This experiment made them act more like the faithful prairie voles.

Many different animals hunt voles in the wild. Predators include owls, hawks, foxes, and even domestic cats. You can often find vole bones inside the pellets dropped by owls. Some owls, like the saw-whet or the barn owl, eat them often. In the summer of 2024, scientists at UC Davis saw something new. They observed California ground squirrels actively hunting voles.

Even though they are small, voles change their world. They love to eat plants, roots, and bulbs. They can even girdle small trees by eating the bark. This can sometimes kill young plants or shrubs. However, their digging also helps the Earth. As they tunnel, they move nutrients through the upper layers of the soil. This helps the ground stay healthy for other living things.

Voles are small rodents belonging to the subfamily Arvicolinae. This group includes relatives like lemmings and muskrats. While they may look like mice or rats, they have distinct physical traits. Voles possess stouter bodies and longer, hairy tails. Their heads are rounder with smaller eyes and ears compared to other rodents. A key difference is found in their molars, which are high-crowned with angular cusps. These specialized teeth help them process their specific diets.

The biology of a vole allows for rapid population growth. A single mating pair can produce 100 offspring in one year. This is possible because females can have five to ten litters annually. The gestation period, or the time a baby grows inside the mother, lasts only three weeks. Once born, young voles reach sexual maturity in just one month. Because of this, vole numbers can expand exponentially in very short periods. However, many voles do not survive long. It is estimated that as many as 88% of voles die within their first month of life.

Lifespans vary significantly between different species. Smaller vole species typically live only three to six months. They rarely survive longer than 12 months in total. Larger species, such as the European water vole, have longer lives. These larger voles usually survive through their second winter. Some may even reach their third winter. This variation in lifespan is a common trait among different members of the Arvicolinae subfamily.

Voles play complex roles in their environments. They are primary consumers that target many types of plants. They eat succulent root systems and bulbs, often burrowing deep underground to reach them. Voles can also girdle small trees by eating the bark. This process of girdling can kill young plants, shrubs, and trees. Despite this, they provide a service to the ecosystem. Their tunneling and burrowing help disperse nutrients through the upper layers of the soil.

Many predators rely on voles as a food source. Common predators include owls, hawks, foxes, coyotes, and even domestic cats. You can often find vole bones inside the pellets dropped by various owl species. These include the barn owl, the saw-whet owl, and the great gray owl. In the summer of 2024, biologists at UC Davis observed a new behavior. They saw California ground squirrels actively hunting voles. This adds another layer to the complex food web that voles inhabit.

Scientists use voles to study social behavior and genetics. The prairie vole is a famous model for monogamy, where males stay with one female. These males often help raise the pups. In contrast, the meadow vole is polygamous, meaning males mate with many females. Researchers have even used a viral vector to change a gene in meadow voles. This experiment made them act more like the monogamous prairie voles. This research explores how chemicals like oxytocin and dopamine influence social bonds in the brain.

Recent studies have even looked at empathy in voles. In a 2016 study, researchers found that prairie voles comfort each other after being mistreated. They spend more time grooming a vole that has experienced stress. This behavior suggests a level of empathy previously thought to exist only in highly advanced animals. Scientists found that blocking oxytocin receptors stopped this comforting behavior. This shows how deeply biological processes are tied to social interactions.