A female part of an animal-identifying device, which includes a cavity intended to receive a head of a male part of said animal-identifying device. The cavity has a blocking element to hold the head inside the cavity. The blocking element has a base and at least two resilient claws extend from the base towards the entrance of the cavity. The claws are movable between at least two positions, one insertion position enabling the insertion of the head into the cavity and one blocking position enabling the blocking of the male head inside the cavity.
