"You can't teach an old dog new ___," idiom describing how hard it is to change habits

___ like fine wine (gracefully grow old)3 It hee-haws3 ___ pal (female bestie)3 Suffix with "Vietnam" or "Siam"3 ___ card (phone chip that lets you make calls): Abbr.3 "SNL" staple4 Particle with a "+" or "-" charge, say3 Fly south for the winter, like some birds7