BigDog

A quadruped robot from the United States, first released 2005.

Sources retrieved: 4 September 2026 (A)

Status: Discontinued
Applications: Research and developmentDefence and emergency responseLogistics
Indicative price: Not stated
Intended use, per the manufacturer: BigDog was our first legged robot to leave the lab, designed to carry heavy payloads over rough terrain.

50100150200 cm204060 in76.230

Boston Dynamics BigDog pioneering rough-terrain quadruped robot

Person
175 cm68.9 in
91.4 cm36 inHeight
76.2 cm30 in

Manufacturer's own photo.

Drawn at one scale next to a 175 cm person, from the figures the maker states: height 76.2 cm and length 91.4 cm.Drawn at one scale next to a 68.9 in person, from the figures the maker states, converted to inches: height 30 in and length 36 in.

Specifications

8/33 specifications disclosed 25 not stated

Show fields not stated

Not statedThe manufacturer states nothing about this field.NoStated: the robot does not have this.A marker with an asterisk (*) also carries a caveat.

Select a source marker for source details and notes.

Physical8/14 disclosed

Weight109kg240lbOur conversion from 109 kg. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

Length91.4cm36inOur conversion from 914 mm. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

Width30cm11.8inOur conversion from 300 mm. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

Height76.2cm30inOur conversion from 762 mm. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

Degrees of freedom16DoF

Payload, walking154kg340lbOur conversion from 154 kg. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

Payload, standingNot stated

Max speed6.48km/h4.03mphOur conversion from 1.8 m/s. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

Max slope35°

Max obstacle heightNot stated

Max stair height, continuousNot stated

IP ratingNot stated

Operating temperature, lowNot stated

Operating temperature, highNot stated

Power0/5 disclosed

BatteryNot stated

RuntimeNot stated

Hot-swap batteryNot stated

Charge timeNot stated

Docking stationNot stated

Sensing and autonomy0/6 disclosed

LiDARNot stated

CamerasNot stated

Onboard computeNot stated

ROS 2Not stated

SDK languagesNot stated

Autonomy featuresNot stated

Payload and expansion0/3 disclosed

Mounting interfaceNot stated

Power outNot stated

Data portsNot stated

Commercial0/1 disclosed

Indicative priceNot stated

Compliance & certifications0/4 disclosed

CENot stated

FCCNot stated

ULNot stated

CCCNot stated

Against the field

Each strip holds every robot of this type in the guide that states the figure, one bar per group of values. Further right means a larger figure, not a better robot.

Height

76.2cm30inOur conversion from 762 mm. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

89 quadrupeds state a height

BigDog

7 state a higher figure, 80 a lower one.

Weight

109kg240lbOur conversion from 109 kg. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

124 quadrupeds state a weight

BigDog

7 state a higher figure, 115 a lower one. Log scale: each step along the axis multiplies the value.

Degrees of freedom

16DoF

76 quadrupeds state degrees of freedom

BigDog

1 states a higher figure, 65 a lower one. 9 more state exactly the same figure.

Max speed

6.48km/h4.03mphOur conversion from 1.8 m/s. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

113 quadrupeds state a top speed