Competitive and Territorial Fighting: Two Types of Offense in the Rat

Table 2. Territorial Fighting as Function of Sex of Intruder

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	Sex of the Intruder
	Female Intruder				Male Intruder
	Bite	Bite & Kick	OSP†	Attack‡	Bite	Bite & Kick	OSP†	Attack‡
Resident female	1.31	0.28	0.31	1.59	0.09	0.13	0.59	0.22
Resident male	0.28	0.13	0.22	0.41	0.71	2.03	4.06	2.74

Notes: All data are frequency of motor patterns per 20-min test.
† OSP = offensive sideways posture
‡ Attack was calculated as the sum of bite and bite-and-kick.