The domestic cats scientific name is Felis catus.  I think that is funny sounding.  Sort of like they couldn't think of anything else
Yes it is, simple and easy to remember though!
Yes, very true although they are usually just called house cats when they are simply kept as pets
I wonder how many different scientific names there are for big cats such as lions and others of the like.
Well there are more than 70 cat breeds but i'm not sure if that is simply regular cats or all cats