A study led by the UAB on the remains of animals found at the site of the Chaves cave obtains new data on the control of breeding and feeding of the first domesticated sheep herds found in the western Mediterranean region during the Neolithic period. The results, exceptional first time evidence of how early flocks of domesticated sheep fed and reproduced within the Iberian Peninsula, are currently the first example of the modification of sheep's seasonal reproductive rhythms with the aim of adapting them to human needs.