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Are rats an invasive species?

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The term invasive species depends on where the location is. If an animal is a pest, but is native to your area, it cannot be officially deemed invasive. That said, rats are still invasive species. read more

The three most invasive rat species, black or ship rat Rattus rattus, brown or Norway rats, R. norvegicus and Pacific rat, R. exulans have been incrementally introduced to islands as humans have explored the world’s oceans. read more

Despite the black rat's tendency to displace native species, it can also aid in increasing species population numbers and maintaining species diversity. The bush rat, a common vector for spore dispersal of truffles, has been extirpated from many micro-habitats of Australia. read more

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