I think it depends on how thick their coat is when it's long - whether or not it's "heavy". If they have a 'cottony' coat, it would probably help to cut it shorter, but if it's more silky or thin, then it shouldn't really make a difference. Drop coat breeds don't seem to have as much of an issue as say a golden retreiver or a german shephard.
The part that would matter most is their belly. If you keep alot of the hair off that area it will help keep them cooler. |