In archaeological excavations at Ovdat conducted by the Antiquities authority and DePaul University and funded by a Fulbright scholarship, members of the Negev Mountain Field School discovered a meter-thick layer in a structure which confirmed unequivocally that sheep and donkeys had existed here in ancient periods.A layer of animal dung, that is. That's pretty unequivocal.
[...]
The site of Ovdat (Avdat) has been mentioned before at PaleoJudaica here and links.
