Abstract
We report the first interspecific double captures (n = 14) of Peromyscus leucopus (white-footed mouse) and Ochrotomys nuttalli (golden mouse). Intraspecific double captures of white-footed mice (57.0% of all double captures) were heterosexual (likely mating pairs). Overall, 62.0% of the double captures for both species were heterosexual, suggesting that there appears to exist a strong conspecific, heterosexual odor preference. The large number of intra- and interspecific double captures (n = 103) also suggests minimal interference or exploitation competition between these two small mammal species of similar body mass and life histories.
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