Okay, I am having the hardest time finding (liking) a collar that fits Tootsie correctly.  Every collar we try on will slip over her head unless I put it so tight that I feel uncomfortable with the fit.  A choke collar works fine as she cannot "escape" from this while we are on our walks (she loves to chase the squirrels so I have a retractable leash to allow for this...).  Any suggestions?