Rotterdam Zoo (Diergaarde Blijdorp), located at Abraham van Stolkweg, PO Box 532, in AM Rotterdam, Netherlands
, was founded in 1857.
I believe the top left cow is Yasmin with her mother Irma next to her. Front left: Anak, Sibu and Trong Nhi. Anak is Yasmins daughter and Sibu is the youngest calf of Irma. Trong Nhi is the daughter of Douanita. Father of Anak, Sibu and Trong Nhi is Alexander.