cat talk?

a nice cat was crying outside the door...I've never fed it, or even really petted it...actually I did see it around and tried to pet it once...at the time, it ran away...anyway, tonight it was very friendly and wanted to come inside, however...hiss hiss hiss hiss hiss...the cat that was here first is not having it...perhaps cats talk...this one went out and bragged to the others...now she's defending her territory...I tried looking up a local no-kill shelter and they are "full to capacity"...maybe if it hangs around, one of the other people who used to feed this cat will notice it...