A shocking discovery leads to a life-and-death battle for a litter of pups and an emaciated mare struggles to give birth to her foal.

Investigators try to keep 30 starving horses alive; investigation leads to a dead dog tied to a fence.

Raid on a dog fight finds injured dogs and lots of money; house contains more than 100 exotic hybrid cats.

Emaciated pit bulls are found during a homicide investigation; over 200 starving chickens; horse is unable to stand up.

Cat is brought in severely burned and the teen owner is the prime suspect; dog is shot; 55 rabbits run rampant in small house.

A pit bull is shot and beaten to death within an illegal dogfighting ring; a boxer dog has mysterious burns up and down her back.

A dog is shot and left fighting for its life; investigators find a neglected horse that has suffered a fatal injury.

Cruelty investigators seize 11 battle-scarred pit bulls during a dogfighting raid while the ringmaster is taken into custody.

The Houston SPCA helps out a three-legged Labrador; rescuing a missing dog in need of urgent medical attention.

A 100 dog rescue leads to an armed siege; over 30 cats and dogs seized at the home of a cat collector; 220 dogs seized from puppy mill; 140 hybrid cats seized.

Police and SPCA investigators try to bring to justice a pet owner caught on camera abusing a puppy; struggling to get a horse to stand after a collapse.

Chief Investigator Boller saves horses from slaughter at a livestock auction by outbidding buyers from meat markets. Investigators are called in to round up some starving cattle.

The dedicated team at the Houston Society for the Prevention of Cruelty to Animals, a private charity, respond to a variety of distress calls involving an average of more than 100 animals per day. This series documents the work they do, from the initial investigation through, in some cases, the animals being adopted into loving homes.

Investigators transport a desperately ill mule back to base for emergency medical treatment. Later, the SCPA join the sheriff's department in a night-time raid.

Investigators check out a report of stolen cattle and find a dozen cows abandoned by thieves beside a busy freeway.

Investigators seize seven horses from a filthy, waterlogged field. The rescue turns dramatic when the horses show no inclination to leave peacefully.

When SPCA Investigators are called to a remote property, they encounter one the worst causes of neglect. They find one horse dead and four more barely alive.

The investigators of the Houston SPCA recall their most unforgettable cases. The team deals with an amazing ten thousand cases every year.