Don't feel too bad mom....until I joined here I don't think I'd ever heard the term 'rolled out' and I've been hunting hogs with dogs for over 35 years....I think it's a Texas term myself,....down south here we say the dogs 'lit out' or they 'took out' or maybe 'took off'....just never associated 'rolling' with a dog....but hey....I'm still not too old to learn something new now and then!
I like to say....they just left the country!