Around 20 of the 72 Iberian Lynxes in captivity in southern Spain and Portugal have contracted an illness that affects their kidneys and can lead to death.
Rodrigo Serra, Director of the Silves Iberian Lynx reproduction centre, said that so far, one lynx has been affected at the Algarve centre.
This illness, which has led to the death of three lynx in Spain since December, is of an unknown origin.
However, according to Rodrigo Serra, test results suggest that it is of a toxic origin that could be in the food, dietary supplements or even vaccines.