Cesar 911 - Season 4

Cesar helps a shih tzu/Pomeranian named Truffles who, despite being physically adorable, barks and nips at anyone who gets too close. Cesar then works with Tiara, whose boss's Chihuahua mix John Henry is wreaking havoc at her workplace — a good-hearted business that helps developmentally disabled adults find volunteer work in their communities.

Cesar helps Krystal and Anthony, whose athletic Vizsla mix Tic Tac threatens to get them kicked out of their home in the marina, and Evan, whose German Shepherd mix is creating havoc with his motorcycle buddies.

Cesar works with Target, a terrier/Chihuahua mix named that lashes out due to tense behavior. He then tries to help Murphy, a rambunctious Golden Doodle with a dangerous habit of eating socks.

Cesar is confronted with a one-eyed rescue mutt, Duk Duk, who is so distrustful of humans, that he attacks out of fear. He has bitten his owner, her mother and her father. He now needs surgery on his leg, but the owner can't get him into the car. Cesar has his hands full and is even willing take a painful bite to teach Duk Duk to stop attacking humans and get the leg surgery he desperately needs.

Cesar is in Singapore working with a fearsome dog named Yoshi. After Yoshi attacked a dog in the community dog park, his owners have kept him locked in their apartment for the past year. Cesar arranges for the owners to let Yoshi out of the apartment for the first time in a year, and he promptly tries to attack. Cesar realizes Yoshi has never had a pack leader to teach him how to behave.

Cesar is in Singapore, where he's been called to deal with an out of control dog named Elffy. Elffy's owner is eight months pregnant, and her family fears Elffy could seriously harm her or the newborn baby. She's already been bitten multiple times by Elffy and has the scars to prove it. If Cesar can't fix Elffy, her family says she has to get rid of the dog before the baby is born.

Cesar receives a call from two women who are concerned that their friend can't control her adopted Golden Retriever-Chow mix Leon. Cesar can tell that Leon's owner is contributing to his anxiety and aggression, so he arranges to work with Leon at the Dog Psychology Center. Cesar begins a step-by-step rehabilitation of Leon, and teaches the owner how to be a pack leader.

Leslie has a golden lab named Buddy that is terrorizing her grandson, Mason. Cesar helps Mason get over his fear and shows him all the behaviors that are creating anxiety in Buddy. Meanwhile, Andrea and Erica, who are fed up with their roommate Sarah's dog Mose, decide that it is time to calm him down and show him that Sarah is the leader of the pack.

Jolene's German Shepherd mix Rocky is extremely aggressive toward her mother, so Cesar takes Rocky to the Dog Psychology Center for intensive behavioral training. Sandra is concerned that her daughter and her husband are having trouble handling their Viszla puppy named Whiskey, since they also have two young children. Cesar shows the family how to properly train Whiskey and subdue his excitement.

Cesar's first call comes from Jason, who is struggling to spend time with his twin brother because his German Shepard, Rusty is driving them apart. Then he helps Ivan, who lives with his girlfriend Amber and her sister Ashley and a pack of three Chihuahua's who are disrupting the house and creating anxiety for Ivan. Cesar helps the three dog owners conquer their barking problem by creating boundaries.

Cesar's first call is from Aurora, who tells Cesar that her granddaughter Yolanda's dog Izzy has made her fearful to live in her own home. Cesar then responds to a call from Sandy, whose friend Marianne has a shepherd-mix named Bear who's aggressive towards other dogs. This is a problem for Marianne because she lives in a small town in the foothills of Los Angeles that is extremely dog-friendly.