re. the ears...
Yup, I also trim on the underside (around the ear hole) as it allows the air to circulate more freely, and Storm has never had any ear troubles
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Also, on Storm I thin a bit behind the ear (at the back on the section that lies near her head and neck). Just to give the ear a bit more shape and help it to lie more flat. But that is just personal preference, and Jasper looks great as he is. His coat is gorgeous