Dr. Blue performs a difficult surgery on a Dalmatian being weighed down by a grapefruit-sized tumor on his head; Dr. Ross brings his family together to get a service dog for his brother Tedric, who has been suffering from seizures his whole life.

Dr. Lavigne must decide during surgery if a giant schnauzer can keep his ear; a poodle named Jay-Z with suspicious symptoms needs Dr. Blue's help; Dr. Ross removes tumors from a rat; the vets pose with pets for a calendar to help animals in Haiti.

Dr. Lavigne performs a risky surgery on a loving pit bull with a record-breaking tumor; Dr. Ross examines a rescue pigeon turned pet; an aspiring vet student joins Dr. Blue at Cy-Fair; the doctors deal with a heartbreaking situation at the clinic.

Dr. Blue recruits Dr. Ross to tackle two wolf spays at a local sanctuary; Dr. Lavigne performs surgery on a pit bull with a torn ACL; new vet Dr. Fedke treats a cat with a creepy, crawly injury.

Dr. Blue surprises his wife with a romantic wedding vow renewal in Las Vegas; a Schnauzer being boarded at the clinic needs medical help from Dr. Lavigne; Dr. Ross treats a very ornery parrot; a senior dog with a recurring eye mass.

The time has come for Dr. Ross and Tauvia to move out of his mama's house. Dr. Lavigne makes a life or death decision with Diesel, a mastiff who could have a toy lodged in his intestines. Dr. Blue sees a pig with an affection for household furniture.

Dr. Lavigne does a not-so-routine surgery on a hermaphrodite dog that's both male and female; a bearded dragon battles a skin disease that Dr. Ross must treat before it causes serious problems; Dr. Blue manages work and a big family move.

Birds of prey at the Renaissance Faire are in need of the West Nile vaccine; Piper the peppy dachshund is not so peppy; Dr. Lavigne performs surgery; Dr. Ross helps Tesla the tortoise with a fractured beak.

Ross closely examines a duck with a lump in his throat; Dr. Lavigne uses x-ray film during surgery in a very unexpected way; Dr. Blue tries to uncover a guinea pig mystery at the clinic; Dr. Lavigne's wife joins a local roller derby team.

Dr. Ross examines a barred owl that was hit by a car, but he hopes will fly again; the doctors also visit an animal rescue center and get close to Texas wildlife.

Dr. Ross and vet tech Kyerra rush to save a stray cat that's been brutally mangled by a car engine. The Ross' move into their new home while Dr. Blue treats a 700 lb. arthritic pig. Dr. Lavigne sees a rescue Chihuahua with an incredible story.

Bubby Cook, a beloved Basset Hound, has a condition that could complicate surgery for Dr. Ross; Dr. Blue has a hog house call; Dr. Lavigne has concerns over his vet tech assisting with an operation on her own dog; a blackout creates chaos at Cy-Fair.

Six sugar gliders turn Dr. Ross into their personal jungle gym; a young Chihuahua with atypical heart trouble; the doctors fish with a client.

Dr. Blue wants a home aquarium; Dr. Ross attempts to diagnose a dog with bizarre test results; Dr. Lavigne performs knee surgery on a bulldog; a lamb has breathing problems.

Tensions run high when Dr. Blue visits a cattle ranch to castrate five adult bulls; Dr. Ross treats a hen with an injury; a puppy needs a serious surgery after being hit by a car.

Dr. Blue castrates five adult bulls on a vegan cattle ranch; a scary bulldozing occurs; a hen with a rough-mating injury; a young puppy is hit by a car.

Dr. Lavigne performs a doggy nose job to help a pug with bad breathing problems; Dr. Blue urgently treats Hardtime, a dog who's facing hard times battling heart disease; an opossum with a traumatic injury needs Dr. Ross's help.

A chicken is rushed to Dr. Ross after being attacked by a coyote; when a Great Dane mix has a seizure, Dr. Lavigne uncovers multiple issues; a surprise serenade at the clinic musically inspires Dr. Blue.

Dr. Ross buys a mobile unit for community outreach and Dr. Blue enlists his brother to help deck it out. Back at the clinic, Dr. Ross examines an iguana for an abscess and Dr. Lavigne helps a paraplegic dachshund get a new set of wheels.

The doctors battle it out to determine who will go to a vet conference in San Diego. Dr. Ross treats a kinkajou nearing his terrible twos, while Dr. Blue rids a Min Pin of drop dead breath. Dr. Lavigne suspects a cat has a contagious disease.

Dr. Ross performs a life-altering surgery on a sweet pup given a second chance at life, while Dr. Lavigne examines a prickly pet. After treating an injured owl, Dr. Blue joins Dr. Ross on pig farm to examine a cute litter of tiny piglets that are sick.

The clock is ticking as Dr. Blue performs an emergency C-section on a mother with two puppies stuck in her uterus, while Dr. Ross and Dr. Lavigne work on pets with serious eye issues. The vets test their on-camera skills to create a video for the clinic.

A pit bull suffers a raccoon attack; an aggressive ferret; the vets test their pig-whispering skills at an animal rescue; the doctors have a surprise announcement for their wives.

Dr. Lavigne sees a surprise on an X-ray of one of his favorite patients; Dr. Ross flexes his exotic vet chops with a fennec fox and a kinkajou with a highly contagious infection; Dr. Blue has his hands full with a former frat house pig named Aubie.

Yuki the bulldog ate something she shouldn't have and it's up to Dr. Blue to find it; Dr. Lavigne and his wife learn how to do alternative home care on Suki, an amputee rescue cat his family adopted.

Dr. Lavigne is tasked at removing a 6-pound mass from a small dog; Dr. Blue and wife welcome their first daughter to the family; the vets make a house call to a llama that's causing some drama; Dr. Ross extracts 14 teeth from a mini poodle.

The doctors prepare to open a new clinic but are apprehensive about a promise they made to each other regarding the event; Dr. Ross tends to a frizzle hen's eye problem; Dr. Blue is alarmed by a bulldog's burst mammary gland.

Houston welcomes veterinarians Dr. Blue, Dr. Ross and Dr. Lavigne, who have their hands full with everything from risky surgeries to diagnosing sick chameleons. A car accident brings the practice to a halt as one of the doctors faces a long recovery.