I have a ten year old beagle who has suddenly become very aggressive. She has always been the most dominant of our five dogs in the house, but in the past few weeks she has started fighting and at times attacking the other dogs.

She is in a good mood most of the time, but we’ve had to get rid of all the toys in the house because if she has one and another dog comes near her she attacks them. She’s also starts wrestling matches with the other small dog in the house and usually gets so aggressive that we have to pull her away.

It is really starting to scare us. She has not badly injured any of the other dogs yet, but she did accidently bit my brother when he was trying to pry her off of another dog. She also killed a squirrel in our backyard a few weeks ago.
The other dogs, who are usually very calm, are now starting to get upset and of course they can’t play as much because all of their toys are gone.

Please, does anyone have any suggestions? We are really starting to worry she might hurt one of the other dogs, especially our small one.