bitch

so i was looking at the Westminster Dog Show results for 2009, and i saw this:

i wonder if they call it out that way. i think i'd be offended if someone called my dog a bitch.

Which reminded me, i rewatched Lady and the Tramp and i could've sworn Tramp called Lady by Bitch. I put on subtitles to make sure and it said something like Beech. (i forget) so why isn't it offensive to call someone a dog? What a DOG!