Why Do Nengajo Have Zodiac Animals on Them?
The animal on the card changes every year
Look at almost any nengajo and you'll find an animal somewhere in the design — a snake one year, a horse the next. This isn't decoration chosen at random. Nengajo design is tied to the East Asian zodiac, a repeating twelve-year cycle in which each year is assigned an animal, and putting the incoming year's animal on the card is one of the tradition's strongest conventions. Nippon.com's overview of nengajo notes how central zodiac designs are to the cards.
The twelve animals, in order
The cycle — called jūnishi (十二支) in Japanese, often eto in everyday speech — runs in a fixed order:
- Rat (ne)
- Ox (ushi)
- Tiger (tora)
- Rabbit (u)
- Dragon (tatsu)
- Snake (mi)
- Horse (uma)
- Sheep/Goat (hitsuji)
- Monkey (saru)
- Rooster (tori)
- Dog (inu)
- Boar (i)
After the Boar, the cycle returns to the Rat and begins again. Because the sequence is fixed and repeats every twelve years, you can always work out a year's animal from a known reference point: 2026 is a Year of the Horse, so 2027 is the Sheep, 2038 is the next Horse year, and so on. In Japan the zodiac year is generally treated as aligned with the calendar year, so the animal changes on January 1 — exactly when nengajo arrive.
One quirk worth knowing: Japan's zodiac ends the cycle with the wild boar (inoshishi), where the Chinese cycle uses the pig. If you see a bristly wild boar on a Japanese card where you expected a pink pig, that's why.
How the animal shows up on cards
The zodiac animal is a design theme, not a rigid template. On real cards you'll see:
- The animal drawn or painted as the main illustration, from formal ink-brush styles to cute cartoon versions
- The animal's kanji character used calligraphically as the design itself
- Subtle versions — a small animal tucked into a corner of a family photo card
- Puns and visual jokes built on the animal, a long-running nengajo genre
The animal sits alongside the card's other fixed elements: the seasonal greeting (see what the greetings on a nengajo mean), the new year's date, and a short personal message. Official New Year postcards from Japan Post also carry the lottery number strip along the bottom.
How old is the pairing?
The zodiac itself long predates the postcard — the twelve-animal calendar came to Japan from the continent centuries before anyone mailed a New Year's greeting. The card tradition has its own deep history, which the Postal Museum Japan traces from the Heian period through the 1949 introduction of lottery-prize New Year postcards; once mass-produced New Year postcards took hold, the incoming year's animal became the natural, endlessly renewable design subject. For the broader story, see how old the nengajo tradition is.
Do you have to use the animal?
No. Photo cards, plain typographic cards, and character-goods designs are all common, and nobody will think a card without a horse on it is improper. But the zodiac animal is the default visual language of the season: if you're designing or buying a card for Japanese recipients and want it to read instantly as a nengajo rather than a generic greeting, the incoming year's animal is the single most recognizable cue you can include. If you're new to the custom entirely, start with what a nengajo is.