Cats are a great companion. Do you have any?
Not right now, but I wish I did they are great for companionship and they can hunt vermin...lol
Do they eat the vermin?
Sometimes, but I use to have a cat that would vermin (mouse and stuff) and try to bring them to me as gifts.
What type of cat is your favorite?
That is hard to pick since there are more then seventy breeds, but I guess one of my favorites would be a Tabby cat or a Simoneese 
I had no idea there were so many types. I prefer tabby's myself.
Their pattern is related to the their ancestor the African wildcat