Na, can't live without it, working long hours in the field or in the office and ya need something to keep ya going. She won't do without it either, she gets mad at me if I keep it away, it's funny to watch a dog throw a temper tantrum cause they can't have their coffee, whines and whimpers and throws herself about and begs and puts her paw on my knee and looks at me with those poor little doggy eyes. Rat Terriors are one of thee, if not thee, only dogs to have a sense of humor. Last month it was bath time, so she ran and hid under the bed, kept trying to get her to come out and she finally stuck a paw out from under the bed with a pair of argyle socks that my girl had been missing for weeks(and we looked everywhere and could never find 'em) think she saved those for ransom.