Zoodoku: A Daily Animal Logic Puzzle That Teaches You One Word a Day
Every language has its own way of naming the animals — and some of those names are a small delight on their own. Simba is simply "lion" in Swahili. A butterfly is a mariposa in Spanish, a papillon in French, a farfalla in Italian, and — with characteristic German directness — a Schmetterling. A jellyfish is a Qualle in German and a medusa in Spanish. Learning one of these a day is about the lowest-effort language habit there is.
Zoodoku builds that habit into a puzzle. It is a free daily logic game that uses animals instead of numbers, and every daily puzzle comes with an animal word of the day — one animal's name in a different language, with its meaning. Solve the puzzle, pick up a word.
You can play today's board right here on this page — it's embedded just below — or go straight to Zoodoku for the full site, the archive of past puzzles and the harder boards. Here is today's:
How to Play
If you have ever played sudoku, you already understand most of it — except the animals aren't there for decoration. The rule is:
Place one animal in every row, every column, and every coloured region — and no two animals can touch, not even diagonally.
That last clause is what makes it a different puzzle from sudoku. The "no touching" rule means every placement ripples outward, ruling out the neighbouring squares around it, and the coloured regions (which are irregular shapes, not tidy 3×3 boxes) force you to think about the whole board rather than one block at a time.
Everything is solvable with pure logic — no guessing required. If you find yourself guessing, there is a deduction you haven't spotted yet. The usual tricks:
- Start with the smallest regions. A region of one or two squares has very few options, and placing its animal eliminates a wide ring of neighbours.
- Look for forced rows. If a region lies entirely within one row, that row's animal must be in that region — so every other square in the row is out.
- Count the gaps. Each row, column, and region gets exactly one animal; when the eliminations leave just one legal square, that's your move.
Three difficulty levels are available — Easy (6×6), Standard (8×8), and Hard (10×10) — and the daily puzzle is the same board for everyone in the world, released at midnight UTC. Your streak is tracked, there's an archive if you miss a day, and you can share your result without spoiling the solution.
The Language Angle
The word of the day is a tiny feature, but it works because it's attached to something you already want to come back to. Nobody sustains a flashcard habit. Plenty of people sustain a daily-puzzle habit — and after a few weeks, you find you know that an owl is a búho in Spanish, an elephant is a tembo in Swahili, a fox is a kitsune in Japanese, and that "panda" and "koala" are simply the same word almost everywhere.
Animal names are a surprisingly good gateway into a language. They are concrete (you can picture the thing), they are common in idioms and children's stories, and they tend to be the words that survive intact when languages borrow from one another — which makes them a map of history. Giraffe comes from Arabic zarāfa; alligator from the Spanish el lagarto ("the lizard"); orangutan from Malay orang hutan, "person of the forest."
Want the Rest of the Sentence?
One word a day is a start. When you want to know how an animal's name is actually used — the idioms, the diminutives, the nicknames a parent calls a child — that's where a native speaker beats a dictionary. Babelfish's phrase archive holds translations that real speakers wrote and corrected, alongside instant machine translation for everything else.
Play today's Zoodoku above, or visit zoodoku.org for the archive and harder boards. Then bring your animal word to Babelfish — instant translation in 46 languages, plus an archive of phrases answered by real speakers.