Petoi · Robot dogs · Buy now

Petoi Bittle

Teens and adults who want to build and program a small robot dog

Best for learning to code · Best Robot Dog

from about $289; Bittle X about $319

Photo: Petoi, Manufacturer product image, via petoi.com, background removed, shown for review and comparison purposes.

from about $289; Bittle X about $319 (RoboZaps, 2026). Prices checked 15 October 2026. We may earn a commission from retailer links.

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Key specs

Type: Programmable kit
Size: Palm-sized
Programming: Open source

Our verdict

The best value way to understand how robot dogs actually work. It rewards tinkering rather than cuddling.

What we like

Real walking robot at a toy-like price
Great for learning coding and robotics
Open source with active community

What to know

Needs assembly and patience
Tiny and not a companion pet
Prices vary by retailer and bundle

How it compares

Spec	Petoi Bittle	Joy for All Companion Pet Pup	KEYi Loona	Unitree Go2 Air
Price	from about $289; Bittle X about $319 (RoboZaps, 2026)	$179.99	about $499, list $529	$1,600 plus shipping (Unitree, Oct 2026)
Type	Programmable kit	Plush companion (toy category)	Wheeled companion robot (pet-like, not dog-shaped)	Quadruped robot
Size	Palm-sized	-	-	-
Programming	Open source	-	-	-
Responds to	-	Touch, sound and motion (per Alzheimer's Society product trial notes)	-	-
Setup	-	No app or Wi-Fi needed	-	-
Movement	-	Does not walk	Wheels	-
Category	-	-	Wheeled companion robot	-
Subscription	-	-	None required at the time of writing	-

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Featured in our guides

Best Robot DogThe best robot dog for your budget: Unitree Go2, Sony aibo, Loona, Petoi Bittle and companion pups. Real robots vs toys,

Researched by our editorial team. Specs come from the manufacturer; strengths and weaknesses summarise independent tests and owner reviews cited in our guides. We have not tested this robot ourselves. How we research.