Yes, especially for Sam and Casey. Sams just a huge mutt, he can be intimidating. And Casey is a German Shepherd...people usually ask if she bites. She does get nervous when people approach us on walks and will bark sometimes, because usually I'm a little nervous too. She hates when stangers stand there and laugh at her.

Boomer, not so much, but he dosen't much like kids he dosen't know, so he's the one I would be careful about. -shrugs-