A pit bull tries to save a hiker from a nearly fatal bear attack. Plus, a cat named Bob wakes up a sleeping family moments before they're poisoned by deadly car fumes. And a dog named Tuxx helps rescue a teen after he's nearly buried alive.

A Maltese thwarts a home invasion. Plus, a pair of dogs rescue a teacher after she's robbed during a Zoom class in her home. And, a cat named "Fluffy" helps her owner call 911 during a medical emergency.

A teenager and her four dogs fight off a bear trying to get into the family's yard. Also, a pair of Dobermans thwart an armed robbery. And a hunter nearly drowns in mud before being saved by his Chocolate Lab Otis.

A Great Dane fights off an intruder during a home invasion. Also, a pet bird named Dylan saves its owners from a nearly fatal house fire. A Border Collie rescues a Chihuahua from an oncoming car, and a bomb-sniffing military K-9 named Lucca is nearly blown up trying to protect U.S. soldiers.

A man falls from the Golden Gate Bridge and is rescued by a sea lion. Plus, a German Shepherd named Buddy leads an Alaska State Trooper to a house fire. And a pair of terriers chase a bear after it finds its way inside a Pasadena, CA home.

A cat named Tara rescues a young boy from a vicious dog attack. Plus, K9 Chief puts his life on the line pursuing an armed suspect. And a German Shepherd named Sadie comes to her owner's aid during a medical emergency.