"Woof woof!"

— Chalk, on several occasions.

Chalk (チョーク Chōku) is a dog from Ishigami Village that is owned by Suika.


Chalk is a small dog with perfectly white fur and no markings. His ears flop over a little and his nose is fully black. His fur is quite short, the only exception being his tail which is slightly bushy. Chalk wears the village rope around his neck as a collar, marking him as one of the Ishigami villagers.


Chalk is quite a playful dog, frequently found playing with the foxtail millet. He rarely barks, but if he does it's to get someone's attention or out of excitement rather than from being scared or surprised.

Abilities and Skills

  • Sniffing: Chalk is trained to follow various scents, such as seeking out specific people or sniffing out truffles.[1]
  • Dramatic Reveals: On two occasions, Chalk has dramatically pulled the cover off something, revealing something that was meant to remain hidden.[2][3]


Chalk first appears playing with Suika outside Chrome's hut, trying to grab the foxtail. He then helps in the way a dog normally does as the humans turn the millet into flour.[4] Later, Chalk joins Suika, Senku and Chrome on their trip to the sunflower field to test out Suika's new glasses.[5] He is also shown celebrating next to Suika when the others to get back from Sulfurina's lake, carrying sulphuric acid.[6]

Chalk helps make ramen.

During the Grand Bout, Chalk is amongst the crowd that was slowly realising that Ginro should never become Village Chief. It's unclear if he's simply mimicking everyone else or if he agrees with their sentiments.[7] Chalk then joins the walk with a newly-healthy Ruri out into one of the nearby meadows.[8]

After Hyoga's initial attack on the village, Chalk joins Suika in scouting out the hidden path Gen left for them to follow. Together, they deliver the tiny knife Senku made to him.[9]

Following Hyoga's second attack and the Kingdom of Science's subsequent retaliation by trying to sneak a cellphone into the Tsukasa Empire, Chalk tries to help track Homura by sniffing along the ground, however due to her gymnastics movements he is unable to find her scent.[10] He's also the one who found Mantle knocked out and in a bush, having been attacked while guarding Homura, then revealing that Homura had replaced herself with a dummy under a blanket.[11]

During the boat competition between Magma, Senku and Yo, Chalk pulls the cover off of Yo's "completed" ship.[12] Suika and Chalk were also summoned by Francois as the resident forest experts to help them find ingredients for black truffle pork rillettes. Once they find boars, Francois demonstrates how to use them to hunt truffles. When they find one and it gets immediately eaten by Sagara, Chalk is trained on the scent to find the rest of them.[13]

Chalk is also very excited to see Suika again after she returns from Treasure Island.[14]

Chapter Appearances

Kingdom of Science Arc
13. Part 1: Stone World: The Beginning Absent
14. Those Who Have Faith Absent
15. Two Kingdoms of the Stone World Absent
16. Kohaku Absent
17. Nasty Looks Pictured
18. Sorcery Showdown Absent
19. Two Million Years of Being Absent
20. Stone Road Absent
21. Dawn of Iron Absent
22. Survival Gourmet Debut
23. The Smooth Talker Absent
24. Lightning Speed!!! Absent
25. By These Hands, the Light of Science Absent
26. A Shadow Alliance Absent
27. A Certain Scientists Wish Absent
28. Clear World Appears
29. Senku's Lab Pictured
30. Death Green Absent
31. Friends Have Each Other's Backs Absent
32. Brain & Heart Absent
33. Baaad Chemicals Appears
Village Games Arc
34. Sneaky Grand Bout Strategy Absent
35. The Masked Warrior Absent
36. Kinro and Ginro Absent
37. Science-User Chrome Absent
38. Master of Flame Absent
39. And the Winner is... Appears
40. Two Million Years in the Making Absent
Village Origins Arc
41. Doctor Stone Appears
42. Tale for the Ages Absent
43. Humanity's Final Six Absent
44. One Hundred Nights, One Thousand Skies Absent
45. Epilogue of Part 1 (End of Part 1) Part 2: Stone Wars Absent
Vs. Hyoga Arc
46. Stone Wars Absent
47. Science Vs. Power Absent
48. Blades of Science Flashback
49. To the Present Absent
50. Humanity's Greatest Weapon Absent
Communications Arc
51. Sweets for the Stone World Absent
52. Age of Energy Absent
53. Hard Knocks Crafting Club Absent
54. Flickering Blue Jewel Absent
55. Treasure Dungeon Push Start Absent
56. The Treasure Absent
57. Heat Heart Absent
58. Wave of Science Absent
59. Voices from Here to Infinity Absent
60. Angel's Song, Devil's Whisper Absent
61. Stone Wars Begin Absent
62. Double Chase Appears
63. Information Warfare Absent
64. Hotline Absent
65. Call From the Dead Absent
66. Liars and Truth Tellers Absent
67. Full Mobilization Absent
68. Flame of Revolution Absent
69. Steam Gorilla Absent
70. Paper Shield Absent
71. Prison Break Absent
72. Experience Points Absent
73. Top-Secret Mission Absent
74. Fateful 20 Seconds Absent
75. 20-Second Countdown Absent
76. Final Battle Absent
77. The Power of Science Absent
78. That Which Destroys or Saves Absent
79. For This Very Moment Appears
80. Humanity's Strongest Tag Team Absent
81. Fingertip Absent
82. Epilogue of Stone Wars (End of Part 2) Absent
Age of Exploration Arc
83. Dr. Stone Absent
84. People = Power Pictured
85. Ultimate Resource Absent
86. Money Absent
87. Senku's Department Store Absent
88. Wings of Humanity Absent
89. Adventures Absent
90. New World Map Absent
91. Need Bread? Start with Wheat Absent
92. Desire is Noble Absent
93. The First Shot Is Yours Absent
94. The Scent of Black Gold Appears
95. First Contact Appears
96. Eye of Science Absent
97. The Joy of Leadership Absent
98. Ryusui Absent
99. Kingdom of Science Photo Journal Absent
100. Origin of the 100 Tales Absent
New America City Arc
139. First Dream Absent
140. New World Plots Absent
141. First Team Pictured
142. World Power Absent
143. Ryusui vs. Senku Absent
144. Ryusui & Gen vs. Senku & Kohaku Absent
145. Bar Francois Absent
146. Bar Francois: Bitters Absent
147. Science Journey Absent
148. Pioneers of Earth Absent
149. Light Lure in Darkness Absent
150. Righteous Science User Absent
151. Dr. X Absent
152. Doctor Vs. Doctor Absent
153. Science Wars Absent
154. Spy vs. Spy Absent
155. Science Is Elegant Absent
156. Two Scientists Absent
157. Same Time, Same Place Absent
158. Who's the Scientist? Absent
159. Lock On Absent
160. Gunshots Echo Absent
161. Craft Wars Absent
162. Down the Earth-Stained Path Absent
163. Multifront Final Battle Absent
164. Re-Lock On Absent
165. Know the Rules, Make the Rules Absent
166. Ultimate Knight Absent
167. Different Strokes Absent
168. Corn City: Population One Million Absent
169. RISK or HEART Absent


  • Chalk is probably thus named because of his perfectly white fur.
  • Chalk may be descended from the dog shown on page 28 of Chapter 1.[15]


  1. Dr. Stone Manga: Chapter 94, Page 13
  2. Dr. Stone Manga: Chapter 79, Page 9
  3. Dr. Stone Manga: Chapter 84, Page 13
  4. Dr. Stone Manga: Chapter 22
  5. Dr. Stone Manga: Chapter 28
  6. Dr. Stone Manga: Chapter 33
  7. Dr. Stone Manga: Chapter 39
  8. Dr. Stone Manga: Chapter 41
  9. Dr. Stone Manga: Chapter 48
  10. Dr. Stone Manga: Chapter 62
  11. Dr. Stone Manga: Chapter 79
  12. Dr. Stone Manga: Chapter 84
  13. Dr. Stone Manga: Chapter 94
  14. Dr. Stone Manga: Chapter 141
  15. Dr. Stone Manga: Chapter 50 — Q&A

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