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Listen to Book 11: The Animal Expedition

All 150 answers from Book 11, read aloud. Press play and keep listening, or tap a question to jump to it. Each title links to its page with the video and the full answer.

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  1. 1.Why Do Mammals Have Fur or Hair?
  2. 2.Why Do Birds Have Feathers Instead of Fur?
  3. 3.What Are Reptile Scales Made Of?
  4. 4.Why Do Some Animals Shed Their Coats?
  5. 5.Why Do Polar Bears Look White If Their Skin Is Black?
  6. 6.Why Do Peacocks Have Such Fancy Feathers?
  7. 7.Why Do Pangolins Roll Into a Ball?
  8. 8.Why Do Frogs Feel Slimy?
  9. 9.Why Do Armadillos Wear Armor?
  10. 10.Why Do Lions Have Manes?
  11. 11.Why Do Cats’ Fur Stand Up When They’re Scared?
  12. 12.Why Can’t a Turtle Crawl Out of Its Shell?
  13. 13.Why Do Elephants Have Almost No Fur?
  14. 14.Why Do Sloths Have Green Fur?
  15. 15.Why Are Blue Jays Blue Without Any Blue Color in Their Feathers?
  16. 16.Why Do Lizards Drop Their Tails?
  17. 17.Why Do Worms Not Have Fur, Feathers, or Scales?
  18. 18.Why Do Penguins Have Dense Feathers?
  19. 19.Why Do Hippos Ooze a Red-Orange “Sweat”?
  20. 20.Why Do Some Animals Change Color with the Seasons?
  21. 21.Why Do Rhinos Have Thick Skin Folds?
  22. 22.Why Do Bees Look Fuzzy?
  23. 23.Why Does Shark Skin Feel Like Sandpaper?
  24. 24.Why Do Birds Fluff Up Their Feathers When It Is Cold?
  25. 25.Why Do Animals Need Skin Care From Nature?
  26. 26.Why Do Dogs Smell So Much Better than Humans?
  27. 27.How Do Pit Vipers Sense Heat?
  28. 28.Why Do Butterflies Taste with Their Feet?
  29. 29.Why Do Snakes Flick Their Tongues?
  30. 30.Why Do Chameleons’ Eyes Move Separately?
  31. 31.Why Are Some Owls’ Ears at Different Heights?
  32. 32.Why Do Elephants Hear with Their Feet?
  33. 33.How Do Fish Feel the Water Moving Around Them?
  34. 34.Why Does the Star-Nosed Mole Have a Nose Shaped Like a Star?
  35. 35.Why Can a Platypus Find Food with Its Eyes Closed?
  36. 36.Why Do Cats Have Whiskers?
  37. 37.Why Do Some Moths Have Feathery Antennae?
  38. 38.Why Do Deer Flash White Tails?
  39. 39.How Do Homing Pigeons Find Their Way Home?
  40. 40.Why Do Rattlesnakes Rattle?
  41. 41.How Do Mosquitoes Find People?
  42. 42.Why Do Rabbits Thump the Ground?
  43. 43.How Do Spiders Feel a Bug Land in Their Web?
  44. 44.Why Do Goats Have Rectangular Pupils?
  45. 45.Why Do Sharks Sense Tiny Electric Twitches?
  46. 46.Why Do Prairie Dogs “Speak” in Chirps?
  47. 47.Why Do Octopuses Taste with Their Arms?
  48. 48.Why Do Meerkats Take Turns as Lookouts?
  49. 49.Why Do Catfish Taste with Their Whole Bodies?
  50. 50.Why Can’t Snakes Blink?
  51. 51.Why Do Wolves Live in Packs?
  52. 52.Why Do Baby Ducklings Follow Their Mother in a Line?
  53. 53.Why Do Elephants Follow a Matriarch?
  54. 54.Why Does a Beehive Have Just One Queen?
  55. 55.How Do Lionesses Hunt as a Team?
  56. 56.Why Do Orcas Teach Calves to Hunt?
  57. 57.How Do Ant Colonies Divide Up the Work?
  58. 58.Why Do Birds Nest in Colonies?
  59. 59.Why Do Beaver Families Build Together?
  60. 60.Why Do Kangaroo Joeys Stay in Pouches?
  61. 61.Why Do Seahorse Dads Carry the Babies?
  62. 62.Why Do African Wild Dogs Vote with Sneezes?
  63. 63.Why Do Swans Mate for Long Partnerships?
  64. 64.Why Do Squirrels Sometimes Raise Orphans?
  65. 65.Why Do Zebras and Wildebeest Travel Together?
  66. 66.Why Do Naked Mole Rats Share Tunnels?
  67. 67.Why Do Starlings Fly in Giant Swirling Clouds?
  68. 68.Why Do Baby Birds Open Their Mouths So Wide?
  69. 69.Why Do Orangutan Moms Stay with Young So Long?
  70. 70.Why Do Dolphins Babysit Each Other’s Calves?
  71. 71.Why Do Leafcutter Ants Farm Fungus?
  72. 72.Why Do Wolves Bring Food to Den Pups?
  73. 73.Why Do Emperor Penguin Dads Hold Eggs?
  74. 74.Why Do Crows Remember Human Faces?
  75. 75.Why Do Animal “Families” Sometimes Include Friends?
  76. 76.How Do Jumping Spiders Hunt Without a Web?
  77. 77.Why Do Cheetahs Have Tear-Mark Lines?
  78. 78.Why Do Pelicans Scoop Fish with Their Big Bills?
  79. 79.Why Do Anglerfish Use Glowing Lures?
  80. 80.Why Do Venomous Snakes Have Venom?
  81. 81.Why Do Bombardier Beetles Spray Hot Liquid?
  82. 82.Why Do Octopuses Squirt Ink?
  83. 83.Why Do Some Caterpillars Look Like Snakes?
  84. 84.Why Do Honeyguide Birds Lead People to Honey?
  85. 85.Why Do Oxpeckers Ride on Rhinos?
  86. 86.Why Do Arctic Foxes Follow Polar Bears?
  87. 87.Why Do Antlions Dig Tiny Pits in the Sand?
  88. 88.Why Do Frogs Use Sticky Tongues?
  89. 89.Why Do Eagles Have Talons?
  90. 90.Why Do Gazelles Stot (Pronk) When Fleeing?
  91. 91.Why Are Dragonflies Such Good Hunters?
  92. 92.Why Do Leaf-Tailed Geckos Look Like Dead Leaves?
  93. 93.Why Do Remora Fish Stick to Sharks?
  94. 94.Why Do Vampire Bats Share Blood Meals?
  95. 95.Do Birds Really Clean Crocodile Teeth?
  96. 96.Why Do Sea Otters Use Rocks as Tools?
  97. 97.Why Do Army Ants Swarm?
  98. 98.Why Do Cuttlefish Hypnotize Crabs with Color Waves?
  99. 99.Why Do Poison Dart Frogs Advertise Bright Colors?
  100. 100.Why Do Some Animals Help Raise Other Species’ Young (Brood Parasitism)?
  101. 101.Why Do Weaverbirds Weave Hanging Nests?
  102. 102.Why Do Birds Choose Different Nest Materials?
  103. 103.Why Do Termites Build Tall Mounds?
  104. 104.Why Do Burrowing Owls Live Underground?
  105. 105.Why Do Tailorbirds Sew Leaves Into Nests?
  106. 106.Why Do Polar Bears Dig Snow Dens?
  107. 107.Why Do Foxes Dig Dens with More than One Door?
  108. 108.Why Do Wasps Make Paper Nests?
  109. 109.Why Do Swallows Build Nests Out of Mud?
  110. 110.Why Do Squirrels Build Leafy Nests High in Trees?
  111. 111.Why Do Moles Dig Such Long Tunnels?
  112. 112.Why Do Eagles Reuse Nests for Years?
  113. 113.Why Do Land Snails Seal Their Shell Doors?
  114. 114.Why Do Bats Roost in Caves?
  115. 115.Why Do Spiders Choose Corners and Doorways?
  116. 116.Why Do Ghost Crabs Dig Burrows on the Beach?
  117. 117.Why Do Flamingos Stand in Shallow Lakes?
  118. 118.Why Do Urban Foxes Live in Cities?
  119. 119.Why Do Migratory Birds Need Stopover Wetlands?
  120. 120.Why Do Coral Reef Fish Stay Near Home Ranges?
  121. 121.Why Do Bees Build Honeycomb Out of Six-Sided Cells?
  122. 122.Why Do Trapdoor Spiders Live in Burrows with Lids?
  123. 123.Why Do Woodpeckers Carve Nest Holes in Trees?
  124. 124.Why Do Tree Frogs Need Moist Micro-Homes?
  125. 125.Why Do Animals Share Habitats Without Always Fighting?
  126. 126.Why Is a Giraffe’s Neck So Long?
  127. 127.Why Can Peregrine Falcons Dive So Fast?
  128. 128.Why Can a Mantis Shrimp Punch So Fast?
  129. 129.Why Is a Cheetah the Land Sprint King?
  130. 130.Why Can Archerfish Shoot Water at Bugs?
  131. 131.Why Do Tardigrades Survive Extreme Conditions?
  132. 132.Why Can Some Animals Live for Hundreds of Years?
  133. 133.Why Do Tiny Shrews Have to Eat Almost All Day?
  134. 134.Why Do Wood Frogs Freeze in Winter and Thaw?
  135. 135.Why Do Sperm Whales Dive So Deep?
  136. 136.How Do Scientists Recognize Individual Animals From Their Spots and Stripes?
  137. 137.Why Do Wildlife Corridors Matter?
  138. 138.Why Do Rehab Centers Help Injured Animals?
  139. 139.Why Should You Never “Rescue” a Fawn Alone?
  140. 140.Why Do Bird Windows Need Stickers?
  141. 141.Why Do Bat Houses and Nest Boxes Help Wildlife?
  142. 142.Why Do Zoos Run Breeding Programs?
  143. 143.Why Do Citizen Scientists Count Butterflies?
  144. 144.Why Do Quiet Zones Help Nesting Birds?
  145. 145.Why Do Some Animals Sleep with Half Their Brain Awake?
  146. 146.Why Do Researchers Use Camera Traps?
  147. 147.Why Is Habitat the Best “Rescue”?
  148. 148.Why Can a Flea Jump So High?
  149. 149.Why Should Curiosity Stay Kind?
  150. 150.Why Do Scientists Still Discover New Animal Species Every Year?

The audio is the sound from each video, so it includes soft background music.

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