The aggressive response of male mice (Mus musculus L.) to a variety of stimulus animals.

The responses to a variety of small animals of 10 male mice whose fighting ability was known were compared either in a neutral test box or in the subject's home cage. The subject's reaction depended on the situation, the nature of the subject and the nature of the stimulus. The nature of the subject was more important than the nature of the stimulus, with some mice attacking all object animals indiscriminately.