They are seriously creepy I'm not sure if it would be better or worst if the yellow dog type things only went in one direction and have a head on the fact that it walks forward and then apparently backwards just as easy is very strange and I don't know why I find this strange 
I think it's known as "uncanny valley" where what you know is real is infiltrated by things that are built and made to try and be real too, but you know they're not.
I guess it's maybe a sign to come soon from Alexa and the like? Though I don't mind Alexa, personally, even though I don't have one in my home. But If I went to someone's house and that dog thing was in their house, I would have to end up leaving. I could not be sitting down and have that thing coming towards me, I'd be scared. I don't know why I find it strange either, especially if I wouldn't have the same reaction from a real dog, but I just do.