The New Scientist has an interesting article about a carnivorous robot. I see some great sci-fi flicks ahead. HAL is hungry…
'bot spoor?
Hmmmm. Sounds like fun!!! 
I’m gonna steal the plans, and cobble together a new machine…use one of those underground pet fences taht shock the dog when he crosses, some fuzzy logic, and a voice recognizance unit. I’ll have a lawnmower that does a drunkard’s walk around my yard and eats it’s own clippings…
Just say,
“Go mow!”
A spell checker would come in handy too.
Personally, I’d rather have a robot that walks around the yard and eats dog turds. I can always hire a kid to cut the grass, but just try offering money to a 7th grader to “poop patrol” the back yard.
Sorry guys, but I’m going to have to make some evil versions of these things as part of my plan to become a supervillian. Try to stay out of their way–I’d prefer them to eat anonymous people in the crowd… 
No, it wouldn’t. Recognition is used more than recognizance, but both are words, so a spellchecker wouldn’t help.