they dont know what they're doing.
i took my 2 dogs there for grooming - they are a shih tzu and a cocker spaniel. they cut my little one's armpit and they didnt know hot to groom the cocker spaniel. they told me i had to get it cut short because they didnt know how to do a cocker cut. i left and went to pampered pet in brentwood and they knew exactly what to do and i love it there now. petco wasnt very nice to me or my dogs and they arent very well trained if they dont know how to do different hair cuts. also, they were twice as expensive