Mammals That Gnaw

Shows places where rodents live, such as grass, rock crevices, or underground, and observes how they store food. Explains that rodents outnumber other mammals in both kinds and numbers. Points out that while some rodents spread disease or damage crops, others are important aids in scientific studies. Shows places where rodents live, such as grass, rock crevices, or underground, and observes how they store food. Explains that rodents outnumber other mammals in both kinds and numbers. Points out that while some rodents spread disease or damage crops, others are important aids in scientific studies. Shows places where rodents live, such as grass, rock crevices, or underground, and observes how they store food. Explains that rodents outnumber other mammals in both kinds and numbers. Points out that while some rodents spread disease or damage crops, others are important aids in scientific studies. Shows places where rodents live, such as grass, rock crevices, or underground, and observes how they store food. Explains that rodents outnumber other mammals in both kinds and numbers. Points out that while some rodents spread disease or damage crops, others are important aids in scientific studies.