Not in a public area, no. A robot can not be held liable for mistakes whereas a human has skin in the game. A company sufficiently big enough to mass produce

Not in a public area, no. A robot can not be held liable for mistakes whereas a human has skin in the game. A company sufficiently big enough to mass produce these robots will have more lawyers than insert deity here and they will consider a certain threshold of workplace incidents acceptable and the cost of doing business. Also consider the robot will need at very least the strength of a human to keep the dog from harming smaller dogs and to protect the dog from bigger dogs. Perhaps if there was a confined area that was impossible to harm the dog then that would be a big maybe once the robot has been proven to not have hardware and software bugs that could cause the dog to be harmed by the robot itself. I do not foresee this occurring in our great great grandchildren's lifetimes. Those that jump the gun a.k.a. risk takers will be causing unnecessary harm to dogs.