Table 2.
Behavioral ethogram.
| Category | Behavior | Description |
|---|---|---|
| Offensive Agonistic Behavior |
Chase * | Actor mouse rapidly pursues target mouse while target mouse flees, unaccompanied by mounting |
| Mount | Actor mouse rapidly pursues target mouse while target mouse flees, accompanied by side or rear mounting | |
| Attack | Actor mouse lunges and/or bites target mouse without target mouse counterattacking | |
| Food steal | Target mouse has control of food by holding it with both forepaws and/or mouth. Actor mouse then takes control of food, leaving target mouse without control | |
| Defensive Agonistic Behavior | Flee | The actor mouse approaches the target mouse, and the target mouse rapidly flees; the actor follows by chasing or mounting |
| Displace * | The actor mouse approaches the target mouse, and the target rapidly flees; the actor does not follow | |
| Freeze | Target mouse is immobile in response to agonistic offensive behavior of actor mouse | |
| Huddling ** | Side-huddle ** | One mouse is resting in direct body contact side-by-side |
| Mounted-huddle ** | One mouse is resting with at least their forepaws on the dorsal side of the other mouse | |
| Other | Active ** | Animal is observable and performing any activity for at least 5 s; must see entire head of mouse |
| Inactive | Mouse visible and motionless for >15 s | |
| Unseen | Cannot reliably code whether mouse is in or on a shelter |
* denotes the behavior recorded for both one-zero and focal animal sampling while ** denotes the behavior was restricted to one-zero sampling and was not measured during focal animal sampling.