I made sure I had the right kind of brush, something that won't hurt. Harvey gets a cat brush. Next I got her used to it. Just gave her a stroke along the back gently while Harvey was laying there to be petted. That's all I did. The trick is getting the right brush and waiting until your bun is in the right mood. If she's all gentle and snuggly and wants to be petted then that's the time to use the brush but only until your bun decides she's had enough,