
Don't the ears go DOWN during teething, if they are going to, not up? That doesn't seem logical (up). And I think this is more likely if one or other of the parents perhaps has weak ears.
My Whippet raises her ears when on 'high alert' but she's always been like that - once through the baby stages. I should have known more when I bought her but as a young pup, her ears would 'cross' over her head which should have told me they'd be more likely to raise. When relaxed, the has them as they should be - 'rosebud'. I'm not particularly concerned. It gives her 'character'