Rodents

Rodents are a group of mammals characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. They make up the largest order of mammals, with over 40% of mammalian species belonging to this order.

Characteristics of Rodents

• Incisors: Rodents have continuously growing incisors that must be constantly worn down through gnawing.
• Diverse species: Rodents include a wide variety of species such as mice, rats, squirrels, beavers, and more.
• Habitats: They are found in diverse habitats, including forests, grasslands, and urban areas.
• Reproduction: Most rodents have a high reproductive rate, with short gestation periods and large litters.
• Ecological impact: Rodents play important roles in ecosystems as both prey and predators, and they are also known for their ability to gnaw and burrow, which can impact human activities.

Common Rodent Species

Here are some common rodent species:

1. Mice (Mus musculus)
2. Rats (Rattus rattus)
3. Squirrels (Sciuridae family)
4. Beavers (Castor canadensis)
5. Gerbils (Gerbillinae subfamily)

Study Guide Questions

1. What are the defining characteristics of rodents?
2. Describe the ecological impact of rodents in various habitats.
3. List and describe three common rodent species.
4. How do rodents' continuously growing incisors impact their behavior and habitats?
5. Discuss the reproductive strategies of rodents and their implications for population dynamics.

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