She is 7 yrs old and is spayed. We got her from a breeder b/c she would not get along with the other female breeders in the house. We have an outside Beagle (male and neutered) and Boxer (female spayed) and when we bring them in at supper time, she attacks them. We want to let her know that this type of behavior is not acceptable, but not sure if we should scold her, put her in time out or just ignore it. Because we are learning about training our dogs, I know that there are certain responses that help them understand better. Just need some advise on how to let her know that even though she's the smallest member of the pack, she's not the least.