An r-strategist, or r-selected species, is a species that emphasizes growth rate as its means of survival. R-strategists are typically predominant in unstable environments because they are able to reproduce quickly and in large numbers. Members of an r-selected species have short life expectancies, take little time to mature and are relatively small in size. The cotton-tailed rabbit exhibits all of these qualities and can therefore be classified as an r-strategist.
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