$65$64.99 per character at Yukai's US online store (run with US distributor Meekins Corporation), all four characters (Yuzu/calico cat, Kotaro/Shiba Inu, Kururi/otter, Marron/bear) listed in stock in an October 2026 check. Some US shops charge up to $85 and also carry a Rinrin/panda version. Japan price ¥5,830. Released in Japan on July 27, 2022 after a Japanese crowdfunding campaign. A global Indiegogo campaign followed in late 2022.
AvailableNot programmablePalm-sizedFinger-nibblingAA batteriesNo app
≤ 1 weekShipping: 5–7 business days. Yukai's US online store serves only US customers and ships by USPS standard shipping, typically 5 to 7 business days in the continental US. Several US gift and Japanese-goods shops also stock it. Yukai US store ↗
Remote control: Not possible. It has no app, connectivity or programming interface.
Overview
A plush cat, dog, otter or bear that gently nibbles a finger placed in its mouth, mimicking the play-biting of babies and puppies. Yukai's "HAMgorithm" picks from about two dozen nibbling patterns so the bites vary, and the soft resin jaw makes a small motor sound as it moves. It comes from the maker of Qoobo and, like Qoobo, is a single-purpose comfort object rather than a robot that walks or talks. Its first shipment of 20,000 was the largest in Yukai's history, and the series passed 70,000 units by July 2025.
A cheap, harmless novelty for anyone who likes the feeling of a puppy nibble, but it does only that one thing.
Specifications
| Category | Companion robots · Desk & social robots |
|---|---|
| Released | 2022 |
| Country | Japan |
| Availability | Available |
| Sales | More than 70,000 units of the series sold by July 2025 Dempa Shimbun, Yukai Engineering press release ↗ |
| Programmability | No programmability |
| Built-in autonomy | Reactive · Responds to its surroundings without a map, such as avoiding obstacles or following a person |
| LLM support | None · A battery-powered plush with a touch sensor and a motor, with no voice, app or API. |
| Best for | Ages 6+ (estimated) |
| Vision sensors | No vision sensors |
| Actuators | DC / gear motors |
| Audio | No audio |
| Compute type | Unknown |
| Remote control | Not programmable |
| Size | About 12–14.5 × 18–20 × 14.5–21 cm depending on the character, about 380 g |
| Drive | Stationary plush, a motor moves the soft resin lower jaw |
| Compute | Not published |
| Vision | None |
| Lidar | None |
| Sensors | Touch sensor on the upper palate that detects a finger in the mouth |
| Runtime | About 3 months on three AA batteries at about 8 minutes of use a day (batteries not included) |
| Speed | N/A |
| SDK | None |
Ratings & reviews
Ratings and reviews load on the live site.
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