S01 E02 — The Madagascar Giant
Madagascar's Pachylemurs were red, furry giants, nearly the size of great apes; recently discovered remains disprove that they went extinct 1,000 years ago; Forrest tries to prove the giant species still lives.

S01 E04 — Florida Black Panther
Forrest combs the Florida Everglades for a predator rumored to exist for years, the Black Panther; it might be a case of mistaken identity, but while scouring the landscape, discoveries suggest that it might be more than a rumor.

S04 E05 — Russian Killer
Jeremy travels to the Amur River in eastern Russia, where a mammoth predator is allegedly responsible for the disappearances of three fishermen.

S04 E03 — Invisible Executioner
Jeremy searches for a monstrous beast that reportedly lives in the Zambezi River and can swallow children whole.

S04 E04 — Asian Slayer
Jeremy investigates grisly river attacks in the Himalayas, but is warned that the suspected predator is a sacred creature.

S04 E02 — Pack of Teeth
Jeremy investigates when a terrifying creature with sharklike teeth is rumored to exist in Botswana's Okavango Delta.

S04 E07 — Phantom Assassin
Jeremy dives into Western Australia's crocodile-infested Fitzroy River to catch an elusive, endangered shark.

S05 E03 — Killer Torpedo
Jeremy travels to Central America to locate a man-sized beast that reportedly leaps into boats and inflicts devastating injuries upon fishermen.

S05 E05 — Vampires of the Deep
Jeremy visits a waterfall in the Pacific Northwest where an ancient creature allegedly attacks swimmers.

S05 E04 — Colombian Slasher
Angler Jeremy Wade pushes himself and his gear past breaking point to discover what killed a bride in the Colombian Amazon; amidst dense jungle and hostage-taking rebels, Jeremy discovers evidence that turns the investigation on its head.

S05 E02 — Atomic Assassin
Jeremy looks into a series of grisly attacks at the site of the world's worst nuclear power plant accident.

S05 E03 — Killer Torpedo
Jeremy travels to Central America to locate a man-sized beast that reportedly leaps into boats and inflicts devastating injuries upon fishermen.

S05 E05 — Vampires of the Deep
Jeremy visits a waterfall in the Pacific Northwest where an ancient creature allegedly attacks swimmers.

S05 E04 — Colombian Slasher
Angler Jeremy Wade pushes himself and his gear past breaking point to discover what killed a bride in the Colombian Amazon; amidst dense jungle and hostage-taking rebels, Jeremy discovers evidence that turns the investigation on its head.

S05 E02 — Atomic Assassin
Jeremy looks into a series of grisly attacks at the site of the world's worst nuclear power plant accident.

S04 E03 — Invisible Executioner
Jeremy searches for a monstrous beast that reportedly lives in the Zambezi River and can swallow children whole.

S04 E04 — Asian Slayer
Jeremy investigates grisly river attacks in the Himalayas, but is warned that the suspected predator is a sacred creature.

S03 E01 — Puppies and a Piggy
One dozen goldendoodles take over a home and a pet pig's bed; a Westie chases after her wandering twin brother; Swiss mountain puppies find their stride.

S03 E03 — Puppies Making Mischief
Artistic Irish terriers meet their troublesome teen brother; eight corgis help out on the farm; an Akita puppy finds her place among her three tough brothers.

S02 E06 — Four Chicks and Counting
The African penguin colony greets its newest additions after a successful mating season; sea otter Mara is presented to the rest of the raft, and the bottlenose dolphin population in Florida is examined.

S02 E08 — Ghost Gators
The team is eager to open their new alligator exhibit featuring rare albino gators; sea otter Gibson is tested for a possible infection; divers must swim with Taroko the whale shark to get a blood sample.

S02 E09 — Expedition Whale Shark
Aquarium staff travel to the remote island of St. Helena to gain footage of whale sharks in their natural habitat during mating season; a spotted ribbontail ray is introduced to her new tank friends, and Cerbie the seal is treated for joint pain.

S05 E05 — Brace Yourself for Employee of the Month
Wayde and Brett create unique aquariums for a luxury apartment complex and a knee brace company; Wayde hopes to energize his employees by holding a special contest.

S05 E03 — Smiling Is the Best Medicine
The team works its magic on a photo booth and constructs an underwater wonderland in a wing of an Ohio children's hospital.