Some high-end dating agencies in Shinjuku now offer "Zoo Concierge Dates." A guide (usually a retired zookeeper or biologist) walks the couple through the park, narrating the of the animals. For example, the guide will pause at the otter enclosure and say: "These two river otters have been mates for 11 years. They groom each other every morning. That is 'Ren'ai' (mature love)." This turns a casual date into a philosophical seminar on loyalty.