Mature
Show (18+)
Beheneko: The Elf-Girl's Cat is Secretly an S-Ranked Monster!
Ｓランクモンスターの《ベヒーモス》だけど、猫と間違われてエルフ娘の騎士（ペット）として暮らしてます
S-Rank Monster no "Behemoth" Dakedo, Neko to Machigawarete Elf Musume no Pet to Shite Kurashitemasu
Binge-ready
Mature: this title has mature themes (such as ecchi or nudity). Images stay hidden until you choose to show them. Recommended for ages 18 and over.
Finished airing — 12 episodes, ready to binge.
- Format
- TV
- Season
- Winter 2025
- Studio
- Zero-G, Saber Works
- Based on
- Light novel
- Episode length
- 24 min
- Started
- 28 Dec 2024
- Ended
- 15 Mar 2025
- Score
- 55/100
Action Adventure Comedy Ecchi Fantasy Reincarnation Elf Animals Nudity Dungeon Magic Monster Girl Dragons
Nobody asked to be a cat! After dying in a fight against the forces of evil, a knight is shocked to discover that instead of being reborn as a hero of humanity, he starts his new life as a behemoth-one of the most powerful monsters in the world! The only problem is that a baby behemoth looks an awful lot like...an adorable house cat?! Things grow even more confusing when a beautiful elf adventurer rescues him from the brink of death rather than finishing him off. This house-cat-slash-knight's baffling journey is just getting started... (Source: Yen Press)
Where to watch
Opening and ending songs
- Opening Saijoukyuu no Kokoro Nonoka Oobuchi (episodes 1-6) Watch ↗
Song data from AnimeThemes.
Source material
I'm a "Behemoth," an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet ↗ · Sランクモンスターの《ベヒーモス》だけど、猫と間違われてエルフ娘の騎士（ペット）として暮らしてます
Novel · Still publishing · 2017
Source: AniList and MangaDex (publication details only).
Credits, releases and news
Staff
- Director
- Tetsuo Hirakawa
- Original creator
- Tarō Shinonome, Nozomi Ginyoku
- Series Composition
- Kanichi Katō
- Script
- Tetsuo Hirakawa, Toshiaki Satō, Kanichi Katō
- Character Design
- Tomoyuki Abe
- Music
- Yūsuke Shirato, oni
- Art Director
- Yukihiro Shibutani, Kako Tachikawame
- Chief Animation Director
- Tomoyuki Abe
Japanese voice cast
- Arnaldo: Nobuyuki Hiyama
- Alicia: Maaya Uchida
- Tama: Tasuku Hatanaka
- Feri: Yū Wakui
- Stella: Hitomi Ueda
- Tama (Cat): Riho Sugiyama
- Vulcan: Tomori Kusunoki
- Aria: Hinaki Yano
Home video releases
- 10 Feb 2026 Beheneko: The Elf-Girl's Cat is Secretly an S-Ranked Monster! - [SteelBook] (Blu-ray)
- 10 Feb 2026 Beheneko: The Elf-Girl's Cat is Secretly an S-Ranked Monster! - Collection (Blu-ray)
Latest news
- 26 Mar 2025 HIDIVE Streams English Dubs for From Bureaucrat to Villainess, Beheneko Anime
- 31 Dec 2024 Muse India Simulcasts Beheneko Anime on YouTube
- 18 Dec 2024 Cosplayer Moe Iori Introduces 'Full Version' of I'm a Behemoth Anime's 2nd Video
- 11 Dec 2024 I'm a Behemoth Anime's 2nd Video Reveals More Cast, Ending Song, December 28 Net Debut
- 7 Dec 2024 Momentary Lily, Beheneko Anime to Release in India
Anime News Network readers rate it 5.8/10 (76 votes).
Source: Anime News Network. Full details at Anime News Network.
Main characters
-
Tama
タマ
Voiced by Tasuku Hatanaka
-
Aria
アリア
Voiced by Hinaki Yano
-
Vulcan
ヴァルカン
Voiced by Tomori Kusunoki
-
Stella
ステラ
Voiced by Hitomi Ueda
-
Lily
リリ
Voiced by Nonoka Oobuchi
-
Feri
フェリ
Voiced by Yuu Wakui
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Airing data from AniList. Last updated 25 Oct 2026.