Season 4, Ep 19: Sasha and Angler
Sasha, a German shepherd mix, trys to attack any other dog ignoring her owner's commands to stop her. Angler, a chocolate lab, growls and attacks anyone (or anything) near him when eating his food, including his own tail!
Season 4, Ep 20: Buster, Sadie and Lacey
An aggressive bulldog and a beagle/terrier mix who is afraid of trash cans.
Season 4, Ep 21: Rufus and Buddy
Buddy is a abused Pit Bull who is human aggressive without warning. Rufus, a Shar-pei/Rottweiler mix, is human and dog aggressive and spins in circles when new people approach.