Christopher Vourlias A tiger on the loose terrorizing the inhabitants of an unnamed city becomes the launching pad for a meditation on love, loss and grief in Romanian filmmaker Andrei Tănase’s feature debut, “Day of the Tiger.” The film, which had its world premiere in the Bright Future strand at the Intl. Film Festival Rotterdam, plays this week at the Transilvania Film Festival. The movie follows Vera (Cătălina Moga), a rundown and emotionally drained veterinarian grappling with some unknown grief as she plods through her daily routine at the zoo. She’s suddenly shaken by the arrival of a tiger that was being kept as a pet by a local gangster, awakening her long-dormant nurturing instincts.