Season 1

2018 · 131 episodes · 43h 40m in all

1. Episode 1
3 May 2018 · 20 min
There's a candy thief at large and Butt Detective's on the case with Brown as his backup. But the trail of the culprit leads right into a lake.
2. Episode 2
4 May 2018 · 20 min
Butt Detective goes to the station, where the officers are looking into who's behind a string of burglaries. But the chief has another job for them.
3. Episode 3
5 May 2018 · 20 min
After a Kaito the canine crook threatens to steal the Goddess Scarf from the museum, Butt Detective prepares to protect the precious booty.
4. Episode 4
14 Jul 2018 · 20 min
The Black Shadow thieves are in town and the police ask Butt Detective for assistance in putting an end to their mischief before any theft occurs.
5. Episode 5
21 Jul 2018 · 20 min
Butt Detective, Brown and Chief Maltese must get to the bottom of the Black Shadow Gang's burglaries. Later, they search for the leader's hideout.
6. Episode 6
28 Jul 2018 · 20 min
After someone leaves a strange box at the Lucky Cat, the police show up to help only to find they're behind Butt Detective, who's already on the case.
7. Episode 7
4 Aug 2018 · 20 min
A conversation at a feline cafe leads Butt Detective to reveal the backstory of how Brown became his assistant, going back to how he learned to talk.
8. Episode 8
25 Aug 2018 · 20 min
A potato-loving lady clad in purple knocks on Butt Detective's door and asks him to get to the bottom of a mysterious message from her ancestors.
9. Episode 9
1 Dec 2018 · 20 min
The purple potato case continues as Butt Detective, Brown and their purple companion head into the ancestors' hut. But it appears to be empty.
10. Episode 10
8 Dec 2018 · 20 min
While hearing about a forest cafe's missing manager, Butt Detective realizes he's been tailed by a persistent koala who may be after Brown's job.
11. Episode 11
1 Dec 2018 · 20 min
When the local barbershop owner complains of a spooky ghost scaring his customers, Butt Detective volunteers to get to the bottom of the mystery.
12. Episode 12
8 Dec 2018 · 20 min
Butt Detective is asked to protect the Oyagi family treasure from Kaito U, a master of disguise, but he seems to remain one step behind the thief.
13. Episode 13
15 Dec 2018 · 20 min
Master burglar Kaito U's stolen the booty from right under Butt Detective's cheeks. But our perceptive hero is not far behind the thief.
14. Episode 14
5 Jan 2019 · 20 min
Butt Detective gets a mysterious letter from a faraway jungle, but it's missing a return address on its back. He and Brown head out for an adventure.
15. Episode 15
12 Jan 2019 · 20 min
Butt Detective and Brown venture further into the dangerous ruins only to come face-to-face— or rather cheek-to-cheek—with a familiar figure.
16. Episode 16
19 Jan 2019 · 20 min
Butt Detective is expecting to be interviewed by Cafe Guide magazine, but the odd interviewer who arrives doesn't quite pass the sniff test.
17. Episode 17
26 Jan 2019 · 20 min
Just as Butt Detective is about to go to the police station to learn about a new crime-fighting tool, he receives an urgent call about a stolen item.
18. Episode 18
2 Feb 2019 · 20 min
An international crime-fighting organization has discovered Kaito U's hiding place. Before they head in, Butt Detective is brought along as backup.
19. Episode 19
9 Feb 2019 · 20 min
Butt Detective and Brown resolve to get to the bottom of rumors about a giant thief. They soon deduce what appears to be its present location.
20. Episode 20
16 Feb 2019 · 20 min
While the cops continue their investigation into the giant jewel thief, Butt Detective and Brown are hot on the heels (and cheeks) of the big bandit.
21. Episode 21
23 Feb 2019 · 20 min
Brown reports that while Butt Detective was out, someone stole his precious snack. The big-cheeked detective uses the case as a training opportunity.
22. Episode 22
2 Mar 2019 · 20 min
Koala-chan asks Butt Detective for help dealing with ghosts seen near a park she likes. Brown insists he's not scared but doesn't seem to want to go.
23. Episode 23
9 Mar 2019 · 20 min
Butt Detective, Brown and Koala-chan are trapped behind a locked door in the supposedly-haunted mansion but he soon deduces an alternate egress.
24. Episode 24
16 Mar 2019 · 20 min
After getting his cheeks shaved, Butt Detective accepts a job from the police to return a stolen item to its owner. But no one knows who it is.
25. Episode 25
23 Mar 2019 · 20 min
Butt Detective investigates a robbery at the Elvis Grizzly museum. The case darkens as the clues lead back to one of the police's own K-9 officers.
26. Episode 26
30 Mar 2019 · 20 min
When a missing bag turns back up filled with cash, Butt Detective must reconstruct a series of unintentional exchanges before two lovebirds depart.
27. Episode 27
6 Jul 2019 · 20 min
A wealthy banker whose daughter has been kidnapped calls on Butt Detective. The criminal is demanding his famous Rainbow Diamond, but it's missing.
28. Episode 28
13 Jul 2019 · 20 min
Butt Detective's search for the Rainbow Diamond is almost at an end. But some wall-writings indicate that actually picking it up might not be so easy.
29. Episode 29
20 Jul 2019 · 20 min
Kaito U's back and he's threatening to steal a porcine spa's "greatest treasure." Butt Detective and the K-9s try to deduce what it could be.
30. Episode 30
27 Jul 2019 · 20 min
Butt Detective and Brown head to a local festival, where a troublemaker who looks just like the double-cheeked detective has been making mischief.
31. Episode 31
3 Aug 2019 · 20 min
Butt Detective uses the cards and coin that his doppelganger left behind to locate him. Meanwhile, Brown helps his new female friend find her ribbon.
32. Episode 32
10 Aug 2019 · 20 min
A new investigator claims to be the best and challenges Butt Detective to a public detective match. But our hero senses something amiss.
33. Episode 33
17 Aug 2019 · 20 min
There's trouble at the KNK bank and the police ask Butt Detective to take the job. But soon Carrot Horse butts in, complicating the situation.
34. Episode 34
24 Aug 2019 · 20 min
Butt Detective receives another request from rich banker Kamenokoji. His daughter Midori is up to something odd and he wants the sleuth to tail her.
35. Episode 35
31 Aug 2019 · 20 min
The K-9 cops and a gang of sparrow laborers ask Butt Detective to look into what's behind a series of spooky ghost-sightings at an old clock tower.
36. Episode 36
7 Sept 2019 · 20 min
After feline thieves nab a special cane, Butt Detective is on the case. He's joined by his double-cheeked dad, who has a history with the stolen item.
37. Episode 37
14 Sept 2019 · 20 min
Brown and his koala pal star in a new detective movie. But behind the scenes, Butt Detective must solve a real case involving some thieving monkeys.
38. Episode 38
21 Sept 2019 · 20 min
Butt Detective arrives at Castle Wolf to protect its booty from Kaito U. But he gets the impression there's something not quite right with his host.
39. Episode 39
28 Sept 2019 · 20 min
Butt Detective arrives at the treasure only to see it stolen by Kaito U. But then a second Kaito U appears and each claims that the other is a phony.
40. Episode 40
4 Apr 2020 · 20 min
Butt Detective and Brown head to a ski slope to investigate rumors of a monstrous yeti, who is behind the resort’s sudden drop in customers.
41. Episode 41
11 Apr 2020 · 20 min
Butt Detective's deductions finally lead him to the bottom of the yeti mystery. But he still needs to catch the culprits responsible for its creation.
42. Episode 42
18 Apr 2020 · 20 min
Butt Detective's deductions finally lead him to the bottom of the yeti mystery. But he still needs to catch the culprits responsible for its creation.
43. Episode 43
25 Apr 2020 · 20 min
Chief Maltese butts heads with his rival, Chief Chihuahua, at a restaurant. After something goes missing, they compete to see who can solve the case.
44. Episode 44
2 May 2020 · 20 min
Butt Detective uses tricky tactics to give Brown a lesson in sleuthing. Later, the local kids surprise Brown by giving him a case of his own to solve.
45. Episode 45
9 May 2020 · 20 min
Butt Detective and Brown receive a mysterious visitor. Once they deduce his identity, he asks them to help stop Kaito U from stealing his treasure.
46. Episode 46
16 May 2020 · 20 min
Butt Detective and the contestants face their next trial: a giant, menacing snake. Later, Kaito U finally shows himself and tries to steal the veil.
47. Episode 47
23 May 2020 · 20 min
Kaito U enters the infamously inescapable Orinona Prison and its straight-arrow warden vows to reform him. But Kaito U isn't about to change his ways.
48. Episode 48
30 May 2020 · 20 min
Kaito U and his crow companion escape from their prison cell, but they're not out of danger yet. Their first stop is the guards' break room.
49. Episode 49
6 Jun 2020 · 20 min
While Butt Detective and the canine cops review a string of apple thefts, a journalist bursts in to report his camera was stolen by a spooky culprit.
50. Episode 50
13 Jun 2020 · 20 min
After two painful cavities lead Brown and Koala-chan to meet at the dentist's office, a canine detective asks them to find his 11 missing puppies.
51. Episode 51
20 Jun 2020 · 20 min
The canine cops reveal a new crime-fighting invention that they're very proud of. But it reminds Brown of the destruction caused by their last one.
52. Episode 52
27 Jun 2020 · 20 min
Kaito U is going after the opera house's treasure, so Butt Detective and Brown pay a visit. One of the actors they see on stage is awfully familiar.
53. Episode 53
3 Apr 2021 · 20 min
54. Episode 54
10 Apr 2021 · 20 min
55. Episode 55
17 Apr 2021 · 20 min
56. Episode 56
24 Apr 2021 · 20 min
57. Episode 57
1 May 2021 · 20 min
58. Episode 58
8 May 2021 · 20 min
59. Episode 59
15 May 2021 · 20 min
60. Episode 60
22 May 2021 · 20 min
61. Episode 61
29 May 2021 · 20 min
62. Episode 62
5 Jun 2021 · 20 min
63. Episode 63
12 Jun 2021 · 20 min
64. Episode 64
19 Jun 2021 · 20 min
65. Episode 65
26 Jun 2021 · 20 min
66. Episode 66
9 Apr 2022 · 20 min
67. Episode 67
16 Apr 2022 · 20 min
68. Episode 68
23 Apr 2022 · 20 min
69. Episode 69
30 Apr 2022 · 20 min
70. Episode 70
7 May 2022 · 20 min
71. Episode 71
14 May 2022 · 20 min
72. Episode 72
21 May 2022 · 20 min
73. Episode 73
28 May 2022 · 20 min
74. Episode 74
4 Jun 2022 · 20 min
75. Episode 75
11 Jun 2022 · 20 min
76. Episode 76
18 Jun 2022 · 20 min
77. Episode 77
25 Jun 2022 · 20 min
78. Episode 78
2 Jul 2022 · 20 min
79. Episode 79
8 Apr 2023 · 20 min
80. Episode 80
15 Apr 2023 · 20 min
81. Episode 81
22 Apr 2023 · 20 min
82. Episode 82
29 Apr 2023 · 20 min
83. Episode 83
6 May 2023 · 20 min
84. Episode 84
13 May 2023 · 20 min
85. Episode 85
20 May 2023 · 20 min
86. Episode 86
27 May 2023 · 20 min
87
87. Episode 87
6 Apr 2024 · 20 min
88
88. Episode 88
13 Apr 2024 · 20 min
89
89. Episode 89
20 Apr 2024 · 20 min
90
90. Episode 90
27 Apr 2024 · 20 min
91
91. Episode 91
4 May 2024 · 20 min
92
92. Episode 92
11 May 2024 · 20 min
93
93. Episode 93
18 May 2024 · 20 min
94
94. Episode 94
25 May 2024 · 20 min
95
95. Episode 95
1 Jun 2024 · 20 min
96
96. Episode 96
8 Jun 2024 · 20 min
97
97. Episode 97
15 Jun 2024 · 20 min
98
98. Episode 98
22 Jun 2024 · 20 min
99
99. Episode 99
29 Jun 2024 · 20 min
100
100. Episode 100
6 Jul 2024 · 20 min
101
101. Episode 101
13 Jul 2024 · 20 min
102
102. Episode 102
5 Oct 2024 · 20 min
103
103. Episode 103
12 Oct 2024 · 20 min
104
104. Episode 104
19 Oct 2024 · 20 min
105
105. Episode 105
26 Oct 2024 · 20 min
106
106. Episode 106
2 Nov 2024 · 20 min
107
107. Episode 107
9 Nov 2024 · 20 min
108
108. Episode 108
16 Nov 2024 · 20 min
109
109. Episode 109
5 Apr 2025 · 20 min
110
110. Episode 110
12 Apr 2025 · 20 min
111
111. Episode 111
19 Apr 2025 · 20 min
112
112. Episode 112
26 Apr 2025 · 20 min
113
113. Episode 113
3 May 2025 · 20 min
114
114. Episode 114
10 May 2025 · 20 min
115
115. Episode 115
17 May 2025 · 20 min
116
116. Episode 116
24 May 2025 · 20 min
117
117. Episode 117
4 Oct 2025 · 20 min
118
118. Episode 118
11 Oct 2025 · 20 min
119
119. Episode 119
18 Oct 2025 · 20 min
120
120. Episode 120
25 Oct 2025 · 20 min
121
121. Episode 121
1 Nov 2025 · 20 min
122
122. Episode 122
8 Nov 2025 · 20 min
123
123. Episode 123
15 Nov 2025 · 20 min
124
124. Episode 124
4 Apr 2026 · 20 min
125
125. Episode 125
11 Apr 2026 · 20 min
126
126. Episode 126
18 Apr 2026 · 20 min
127
127. Episode 127
25 Apr 2026 · 20 min
128
128. Episode 128
2 May 2026 · 20 min
129
129. Episode 129
9 May 2026 · 20 min
130
130. Episode 130
16 May 2026 · 20 min
131
131. Episode 131
23 May 2026 · 20 min