We take our (small) dog everywhere. He gets anxious at home alone and is happier to sleep in the car (before the flaming starts, no we don't do that on a hot day etc). We always respect the people we are visiting's wishes. Sometimes he can stay in their yard, sometimes he has to stay in the car eg. If they have an anti-social dog, if they are allergic or of they don't want him inside but their yard is not secure. It's not their problem that we like to take him everywhere.
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