How often should you wash your dog?

i have a patterdale terrier and i tend to wash her when she is a little stinky. she has short hair so not so high maintenance, but i did hear somewhere that you shouldn't wash your dog too often as it can develop into skin allergies over the years - which i don't want to happen obviously. so my question... show more i have a patterdale terrier and i tend to wash her when she is a little stinky. she has short hair so not so high maintenance, but i did hear somewhere that you shouldn't wash your dog too often as it can develop into skin allergies over the years - which i don't want to happen obviously.

so my question is how often should you wash your dog without this happening?
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