Spoor, according to Oxford Living Dictionaries:
The track or scent of an animal.
Two of their example sentences:
‘He found the spoor easily enough and followed it for about a minute, but then it forked.’
‘They followed cattle spoors for about seven kilometres and found 66 of the cattle scattered over a distance of 10 km.’
Used in academia:
Tracking, the reconstruction of activity from the spoor of animals, is an age‐old technique that is still frequently used by modern‐day hunter/gatherer communities.
"Spoor | Definition of Spoor in English by Oxford Dictionaries." Oxford Dictionaries | English. Accessed May 26, 2018. https://en.oxforddictionaries.com/definition/spoor.
Stander, P.e., Ii. Ghau, D. Tsisaba, Ii. Oma, and |.| Vi. "Tracking and the Interpretation of Spoor: A Scientifically Sound Method in Ecology." Journal of Zoology 242, no. 2 (2009): 329-41. doi:10.1111/j.1469-7998.1997.tb05805.x.