Hi, I have a German Shepherd/Whippet mix. She has an unusual coat which resists grooming with any of the tools I've tried. Nothing so far will grab her hair. Her fur has the texture of a German Shepherd coat (coarse guard hairs with a soft undercoat), but it's very thin; short (1/4" to 1"); and tight to her body. I've tried bristle, wire-pin, rubber, and slicker brushes. I've also tried a Furbuster deshedding tool and a fine toothed comb for people. Everything so far just slides over her fur without picking anything up so it ends up everywhere.
If someone can suggest a tool that might be effective on my dog's coat it would be greatly appreciated.