
I have to say, dogs clipped out shaved to teh skin rather than in their natural coat annoys me beyond belief.
I do not think that there really is anything that would be acceptable to do to a rescue that you wouldnt consider for a non-rescue, except on welfare grounds (for instance, a highly nervous dog with an awfully matted coat may be clipped under sedation as it is terrified of being groomed, but after THAT, counter-conditioning to enjoy grooming would certainly not take as long as it would take for the coat to grow back!).
Honestly if people haven't the time - don't have the dog!
It isnt always black and white (hence the above example) but too many things are done under this excuse of 'well if we didnt do this we couldnt keep him we'd have to rehome/pts'... it might start with clipping because someone cant be bothered to groom, and ends wtih e collars and filing a dogs teeth off because they havent the patience to train properly (Adam dont even bother I have you on Ignore user anyway!).
Grooming is a matter of time and common sense - I have a Tibetan Terrier in full coat - we don't aimi to keep him in a SHOW standard coat, but hes clean and brushed the majority of the time. I have a saluki x afghan with looooads of coat, all fluffy (like shes got frilly knickers and petticoats on!) - again im not trying to grow more coat there but we keep her tat-free and clean... The Deerhound needs regular brushing or she resembles something dragged through a hedge backwards (then forwards, then backwards again...)...
I would imagine some people would shave all these down, and kid themselves it is for the dogs welfare because its 'cooler' without that heavy coat but actually on a hot day, my Tibby is the coolest dog around, HE is insulated frmo the heat with his double coat, whereas mrs frilly knickers has a fine saddle that allows her to get quite hot, and fluff covering all the areas where blood vessels run close to the surface and would normally help her cool. SO even though shes got a third the coat he has, shes the one that overheats first!
Most of these dogs that get shaved bald each summer would stay FAR cooler if their owners BRUSHED them properly. It astounds me that people do not know how to do this (though my OH does not know and 'can't do it.. i suspdct there is a bigger element of 'i wont, because I know you will...').