Table 1.

Multi-animal pose estimation dataset characteristics

Feature	Mouse	Pups	Marmosets	Fish
Labeled frames	161	542	7,600	100
Keypoints	12	5 (+12)	15	5
Individuals	3	2 (+1)	2	14
GT identity	No	No	Yes	No
Annotated video frames	11,645	2,670	15,000	1,100
Total duration (s)	385	180	600	36

Number of labeled training frames, keypoints and individuals. Keypoint number in brackets relate to the unique animal in the frame, and unique individual in brackets is noted, that is, one parenting mouse. Animal identity was only annotated for the marmosets. For tracking, separate videos are used and the total number of densely human-annotated video frames (and their combined duration in seconds) is also indicated.