Animal Care Day (Shiiku no Hi)

What Is Animal Care Day?

Every year on April 19th, Japan observes "Animal Care Day" (Shiiku no Hi), established by the Japanese Association of Zoos and Aquariums (JAZA) in 2009. The date comes from the wordplay "shi (4) - i (1) - ku (19)," which sounds like "shiiku," meaning "animal care/husbandry." This day promotes understanding of the roles zoos and aquariums play in species conservation, education and recreation, and research. It's a chance to learn about the work behind the scenes of zookeepers and aquarists, and to reflect on the importance and responsibility of caring for living creatures and the relationship between humans and animals.

Historical Facts About the Role of Zoos and Aquariums

Modern animal care facilities have evolved from simple display spaces into vital hubs for protecting Earth's ecosystems.

• A fortress for "species conservation": Breeding endangered species in captivity to pass them on to the future. Species like the Japanese crested ibis and the Oriental white stork were saved from extinction thanks to the dedicated efforts of zookeepers, eventually leading to reintroduction into the wild.
• Environmental enrichment: Beyond simply housing animals in enclosures, "environmental enrichment" — designing spaces and activities that allow animals to behave more naturally — has become widespread. Giving animals toys or changing how food is hidden reduces stress and supports scientifically managed physical and mental health, now a global standard.

Scientific Facts About the Bond Between Humans and Animals

Caring for animals — and even watching them — has positive effects on the human brain.

• Oxytocin release: Interacting with animals or watching over them with affection releases oxytocin, the "happiness hormone," in the brain. This lowers blood pressure and reduces stress, a scientifically recognized effect known as "animal therapy."
• Developing empathy: The process of caring for animals — reading their needs from movement and expression without words — activates brain regions responsible for nonverbal communication and empathy.

Fascinating Facts About Animal Care

• The keeper's "eye for detail": Professional keepers never miss subtle changes in appetite or gait. Because wild animals instinctively hide weakness, this kind of observation is one of the highest forms of skill in the field.
• Husbandry training: Training animals to cooperate voluntarily during medical checkups or blood draws. Conducting health exams without anesthesia is at the cutting edge of modern animal care, helping extend animals' lifespans.
• Japan's first zoo: Ueno Zoological Gardens opened in 1882. Over more than 140 years of history, Japan's animal care techniques have been refined to world-class standards.
• The science of aquarium water: Massive tanks require 24-hour management of water temperature, salinity, and microbial balance. Aquariums are also engineering sites managing enormous "life support systems."
• The "studbook" — a baton of life: By keeping family trees (studbooks) for individual animals, zoos avoid inbreeding and ensure healthy offspring. Facilities worldwide are connected through networks, protecting animals as one global "family."

Tips for Spending Animal Care Day

• On April 19th, visit a nearby zoo or aquarium. Pay attention not just to the animals on display, but to the movements of the keepers and any displayed information about their care philosophy — a glimpse into the professional work that supports life
• If you have a pet, give it some "special care" today — make a new toy or spend extra time brushing it, reaffirming a bond that goes beyond words and healing your own heart in the process
• Turn the idea of "nurturing" toward yourself. As you work hard in a new environment this term, treat yourself as a "precious life" deserving careful care (self-care) — proper nutrition, rest, and a comfortable environment
• Watch a documentary or read a book about wildlife. Learning about the harsh realities facing wild animals and the people working to protect them can help you think about your role and possible actions as part of this great "caretaking" planet

A Gentle Gaze Toward the Pulse of Life Weaves Bonds Across Species and Fills the Earth with Diverse Brilliance

April 19th is a day to feel the richness of caring for and supporting another life. Caring for animals isn't about control — it's the "art of love," wishing for another's happiness and creating an environment where their individuality can flourish. If you're in a position to guide or support someone in a new environment, try adopting the patient, warm gaze a keeper gives an animal. The care and attention you offer will eventually blossom into great trust, and your own life will be filled with that same vitality. Let's nurture, one step at a time, a world where every life is respected and can thrive together.