Pet owners, your feedback please

So, those of you who have pets and also have sex (not with the pets, of course)... I just wanna know: do you shut the pets out of the area when you're in the act or do you allow them to just wander around unrestrictedly? If the former, ever have any problems with pet separation anxiety (e.g. barking for attention), and if the latter, well, any other problems?

This isn't a gratuitously lewd question but rather a serious (okay, semi-serious) inquiry on petiquette.

Betcha' never got asked that before!