Table 2. Definition of live-recorded behaviours.
| Behaviour | Type of recording | Definition |
|---|---|---|
| Contact with novel object (contact) | D, F, L | Physical contact with any part of the body with the novel object or sniffing the novel object while being closer than 0.1 m to it |
| Inactivity | D | At least three legs touch the ground, no forward movement |
| Exploration | D, L | Sniffing or licking the wall or floor of the open field |
| Grooming | D | Calf licking or scratching itself with one hind leg |
| Activity | D, L | Max. 3 legs touch the ground, forward movement |
| Running | D | Max. 2 legs touch the ground, fast forward movement |
| Vocalisation | F | Any kind of sound the calf makes |
| Change of segment | F | Leaving one segment and entering another with at least the forelegs |
| Habitation in segment where the novel object is placed (object segment) | D, L | With at least the forelegs in the segment in which the novel object is placed |
| Habitation in segment next to segment where the novel object is placed (object neighbouring segment) | L | With at least the forelegs in the segment next to the segment in which the novel object is placed |
Definition and type of recording of the behaviours live-recorded during the novel-object test; D = duration (total time in s), F = frequency, L = latency (time in s until behaviour was first shown).