The system for marking a non-human biological object and removing a sample of the object, comprising:- a first tag part,- a second tag part,- a pin, which pin is connected to the first tag part by its first end and which pin is provided with an integral head at its second end.The second tag part is provided with a receiving opening for the head of the pin, such that the pin can be pressed through a part of the biological object, in particular through the ear of an animal, and subsequently through the receiving opening of the second tag part, as a result of which the first and second tag parts are attached to one another and to the biological object via the pin.The system furthermore comprises a sample container and a sample removing stopper. An integral stopper engaging portion of the head is embodied as a visual tamper evident member that is permanently deformed when - in order to disconnect the pin from the second tag part - the head is pushed back through the receiving opening by applying a pressing force on said stopper engaging portion.
