An overweight cat with kidney disease struggles to survive; a dog is hit by a car while its owners are out of the country.

The staff hosts a fun run to raise money for animals in need; a dog requires emergency surgery after it's found tied to a fence; a stray Pomeranian finds a forever home.

A 5-month-old puppy that belongs to a homeless man has an injured paw; a dog in pain has X-rays that reveal a severe case of bladder stones.

A runaway dog is brought in by animal-control officers after it got caught in a chain-link fence. Meanwhile, a dog has buckshot in its hind quarters; a large cat has a facial injury; a dog has a sore paw; and longhorn bull calves must be gelded.

A miniature pig with an injured leg needs surgery, but it may not be able to handle anesthesia; a French bulldog has a routine dental exam that turns into a complex operation; the team ventures into the Rockies to help a couple who rescue sled dogs.

A dog may have a broken leg, but Dr. Young suspects it's a more serious condition that requires immediate surgery. Meanwhile, a veterinary technician must overcome her fear of birds; and a cat's appetite gets it in trouble.

In the premiere of this series following the work of Denver veterinarian Jeff Young and his staff at Planned Pethood Plus, a dog goes into cardiac arrest shortly after arriving at the clinic.

Dr Jeff and his team are pushed to the limit when a litter of 10 puppies comes in with a mysterious and deadly disease. Then, Dr. Jeff must work out what's wrong with a limping cat before performing complex hip surgery.

A beagle is left at the clinic after it was attacked by another dog; a golden retriever has a broken leg; a technician shows a rescued kitten's owner how to feed it if it refuses to eat; a goat needs a botched operation fixed. Also: The staff visit a farming community to help with a feral cat population.

A stray dog needs a home once it recovers from surgery that was required after it was hit by a car in Oklahoma. Meanwhile, a golden retriever needs immediate surgical attention after swallowing a pacifier.

When a beloved dog is hit by a car, Dr. Jeff battles to save his shattered leg. Then Dr. Amy takes on a new challenge treating 7 bad-tempered chickens. And a tiny kitten found unconscious at a construction site unites everyone in a fight to save it.

Jeff performs surgery on a pig for the first time; a dog is foaming at the mouth and requires immediate attention; Lindsay gets a surprise when she treats a sick goldendoodle.

A puppy with a broken leg is saved from a shelter in Oklahoma; a dog needs immediate treatment after eating a box of chocolates infused with marijuana.

A puppy has a broken leg after jumping off the back of a truck; Rachel tends to a cat that was injured in a fight with the dog next door; a fourth-grade class hopes Jeff can save their pet hedgehog.

Dr. Jeff races to save the legs of a puppy who has been hit by a car after getting loose. Newly hired exotic pet vet, Dr. Baier, treats a Burmese python that is losing weight.

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Dr. Jeff battles to save a Bearded Dragon who is having a seizure. Then Dr. Nichols must figure out why a family's beloved dog is not eating and struggles to breathe. And, Dr. Amy is put to the test when a routine cat neuter turns complicated.

Dr. Jeff must act fast to save a kitten with head trauma. Then Dr. Amy treats a dog whose weak heart makes surgery a risk. A good Samaritan helps a family when their pit bull is hit by a car. And Dr. Baier gets a workout trying to treat two wallabies.

When two Chihuahuas are found abandoned in a storm drain, Dr. Jeff and his team will do whatever it takes to help them. Then Dr. Jeff makes a surprising discovery when a cat's bizarre eating habits put her life in danger.

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Denver's busiest vet is back, with more patients than ever before. Dr. Jeff fights to help a dog walk again. Dr. Amy operates on a cat with a strange appetite. And the team heads out to a sanctuary to help an injured tiger.

Dr. Jeff operates on a dog rushed to the clinic after a growth on her neck ruptures. A family brings in their rabbit with mysterious growths on her side. And the team performs a risky procedure on a pair of rescued miniature donkeys.

An owner drives nine hours to the clinic hoping Dr. Jeff can save her dog's leg. Jeff and his team head to a wildlife sanctuary to treat a pack of wolves. And when a kitten with a deformed leg needs treatment, Dr. Baier steps up to the plate.