| 1 | It's not a dog, but a rodent that lives in underground tunnels. | |
| 2 | Its natural hosts are various species of rodent such as marmots and voles, which are found throughout China. | |
| 3 | The largest rodent that ever lived weighed a ton or two, scientists revealed today. | |
| 4 | Since the rodents are afraid of humans, they often emit vocal alarm calls whenever a person approaches. | |
| 5 | But the new study found that 70 percent of rodent and primate groups have species with an appendix. |
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