I don't care for robots if we're not there to experience the universe. They're just a byproduct, a piece of trash we'll leave after we're gone. I want us to explore, not our toasters.
Would it be OK if the robots brought a dog along?
The rest of our fellow animal companions on this earth are thousand times better than any robot. If I'm forced to choose one of them, I wouldn't choose a dog, I'd go for one of the apes, octopus, crow, or maybe even a dolphin. But I'm fairly sure if they're given the option they'll rather stay here.