Yes, it's intentional. As opposed to crops, cattle tends to wander about. I felt that some more variety was needed, so why not?
Isn't cattle
usually confined to (at least some kind of) pasture? Why would the aliens go out of their way to take apart cattle that's wandered into a town? Lone cattle in woods/wilderness would probably fit, but isn't the whole cattle mutilation schtick something that's supposed to happen outside of (densely) settled areas and when nobody is around to actually witness it?
I mean aliens spooking (or otherwise influencing, what do I know) cattle to run of into the woods so they can have some "alone time" makes sense, but aliens doing this in broad daylight in the middle of a town is kind of stretching it. Or do the aliens just drop off the remains in the nearest human settlement after they are done? I am currently picturing a UFO dropping a dead cow onto some poor dudes lawn, and somehow it doesn't have the same
impact.
I mean...
The aliens have many uses for earth's fauna. Animals are abducted secretly and returned with various organs removed[...]"
Granted, it doesn't say "returned secretly", but it kind of defeats the point a bit, doesn't it?