{
  "about": "Original drawings in tracks.js (PlayOwl, 2026-10-23). Each entry says what was drawn and the field guide whose description it follows. Drawings are not to scale. 'clue' is the sentence the game shows after a question.",
  "books": {
    "elbroch-mammals": "Mark Elbroch and Casey McFarland, Mammal Tracks & Sign: A Guide to North American Species, 2nd edition, Stackpole Books, 2019.",
    "elbroch-birds": "Mark Elbroch and Eleanor Marks, Bird Tracks & Sign: A Guide to North American Species, Stackpole Books, 2001.",
    "murie-elbroch": "Olaus J. Murie and Mark Elbroch, Peterson Field Guide to Animal Tracks, 3rd edition, Houghton Mifflin, 2005.",
    "bang-dahlstrom": "Preben Bang and Preben Dahlström, Animal Tracks and Signs, Oxford University Press, 2001.",
    "stuart-africa": "Chris Stuart and Mathilde Stuart, A Field Guide to the Tracks and Signs of Southern, Central and East African Wildlife, Struik Nature, 2013 (ISBN 9781770073609)."
  },
  "tracks": {
    "domestic-dog": {
      "drawn": "Front print: four oval toes, claw marks, symmetrical; triangular heel pad with one lobe at the front and two at the back.",
      "clue": "Dog tracks show four toes, usually with claw marks, around a triangular heel pad.",
      "source": "elbroch-mammals"
    },
    "red-fox": {
      "drawn": "Narrow, oval print with four small toe pads (the feet are very furry), claw marks, and a bar-shaped (chevron) heel pad.",
      "clue": "Red fox tracks are small and narrow. Fur on the feet makes the toe pads small, and the heel pad looks like a bar.",
      "source": "elbroch-mammals"
    },
    "domestic-cat": {
      "drawn": "Round print with four teardrop toes in an uneven arc and no claw marks; large heel pad, two-lobed in front and three-lobed behind.",
      "clue": "Cat tracks are round, with four toes and no claw marks, because cats keep their claws pulled in while they walk.",
      "source": "elbroch-mammals"
    },
    "white-tailed-deer": {
      "drawn": "Split (cloven) hoof: two pointed halves side by side, together shaped like an upside-down heart.",
      "clue": "Deer walk on two hoof halves, so their tracks look like a split heart pointing the way the deer went.",
      "source": "elbroch-mammals"
    },
    "wild-boar": {
      "drawn": "Split hoof with blunter, rounder tips and a wider gap than a deer's, plus two dewclaw marks behind and outside the hoof.",
      "clue": "Wild boar tracks show a split hoof with rounded tips, and two small dewclaw marks behind it.",
      "source": "bang-dahlstrom"
    },
    "horse": {
      "drawn": "One rounded hoof wall, open at the heel, with the V-shaped frog in the middle (an unshod hoof).",
      "clue": "A horse stands on one big toe, its hoof. The print is round with a V-shaped mark, the frog, in the middle.",
      "source": "murie-elbroch"
    },
    "brown-bear": {
      "drawn": "Front print: five toes in a nearly straight line ahead of a wide pad, with long claw marks well ahead of the toes.",
      "clue": "Bear tracks have five toes in a row in front of a wide pad. Brown bears have long claws, so the claw marks sit far ahead of the toes.",
      "source": "elbroch-mammals"
    },
    "raccoon": {
      "drawn": "Front and hind prints side by side: five long, finger-like toes on each; the front looks like a small hand and the hind is longer with a heel.",
      "clue": "Raccoon tracks look like tiny hands, with five long fingers on each foot.",
      "source": "elbroch-mammals"
    },
    "virginia-opossum": {
      "drawn": "Front print: five toes spread like a star. Hind print: four toes forward and a thumb-like toe pointing inward at a wide angle.",
      "clue": "Opossum front feet make a star shape, and each hind foot has a thumb that points sideways, a bit like ours.",
      "source": "elbroch-mammals"
    },
    "european-rabbit": {
      "drawn": "A hopping group: two long hind prints side by side in front of two small front prints placed one behind the other; soft edges and no clear toe pads (furry feet).",
      "clue": "When a rabbit hops, its long back feet land in front of its small front feet, so the group of four prints points the way it went.",
      "source": "bang-dahlstrom"
    },
    "african-bush-elephant": {
      "drawn": "Large round front print with the cracked pattern of the sole and small nail marks along the front edge.",
      "clue": "Elephant tracks are huge and round, with a cracked pattern from the thick skin under the foot.",
      "source": "stuart-africa"
    },
    "mallard": {
      "drawn": "Three forward toes joined by webbing, with small claw tips; the raised hind toe leaves no mark.",
      "clue": "Duck tracks have three toes joined by webbing, which helps ducks paddle in water.",
      "source": "elbroch-birds"
    },
    "chicken": {
      "drawn": "Three thick forward toes and one short hind toe, no webbing.",
      "clue": "Chicken tracks have three thick toes pointing forward and one short toe pointing back.",
      "source": "elbroch-birds"
    },
    "great-blue-heron": {
      "drawn": "Four long, thin toes: three spread forward and a long hind toe pointing straight back.",
      "clue": "Heron tracks are big and spidery: three long, thin toes forward and one long toe pointing straight back.",
      "source": "elbroch-birds"
    }
  }
}