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Robotic dog-mounted rifles are now a thing thanks to US Army
(interestingengineering.com)
This is a most excellent place for technology news and articles.
Boston Dynamics said that, and they have stuck to that commitment. IIRC it's even in the contract when you buy a robot from them that you will not equip it with a weapon.
This article is about Ghost Robotics, which has never made such a commitment. They are known to supply gun-equipped robots to governments at all levels.