Land of the Giants (1968)

S2E8 Every Dog Needs a Boy

After Chipper gets hurt by an enormous dog, Barry and his friends are forced to seek help from an oversized veterinarian and his cruel son. Desperate to save their beloved pet, they navigate the challenges of dealing with the intimidating duo, hoping to find the right treatment for Chipper's injuries while uncovering the true nature of their unusual caregivers.